34 pict 3 idle jet size

all make a difference in how our old engines run, so you might need to experiment a little. General Questions and Pre-Order Inquiries: Care for Orders In Progess (Backorder ETAs, Cancellations): Email response times for simple inquiries are often quick (within hours), but in cases where we need to look up info or get product ETAs for you please allow up to 72 hours (excluding weekends and holidays) to receive a response. With the larger main jet, you might also need to consider a size 50 idle jet in lieu of the normal 55. This carburetor will NOT work well with cams with over 270 duration, (same as the stock 34-3 carb). See our Accelerator Cable Adjustment Procedure. Both clearances are essential; If the accelerator pump linkage rubs on either end, the throttle lever will not be able to return all the way to the stepped cam, the result being an excessively high idle that cannot be controlled with the bypass screw. If the jets are screw in to tight that will cause high idle. Rob's note: When removing the main jet, I use a small glass jar (pickle or baby-food jar) to catch the fuel from the brass plug - I hardly spilled a drop (I just allowed the plug to fall in to the jar), and used the fuel to refill the float bowl later. Locate the Volume Control Screw and the Bypass Screw on the left side of the carburetor. Once all together, retune the carbs (mixture and idle speeds) as per standard VW tuning methods. If the idle RPM peaks at 2-3 1/2 turns out, you're OK. Every engine is different, so strongly consider getting our micro sized idle jets to really dial it in. Note: It is very important that you install the correct needle seat gasket. Just start off with a larger than normal size (150 maybe) and use the screw to increase/decrease the actual hole size. (The jets are made in 2.5 increments, so it goes X127.5, X130, X132.5, X135 etc. Re: 34 PICT 3 Adjustment Woes. Turn the Bypass Screw (the larger one) out a couple of turns, to get things started. 21.00 (Excl VAT) 25.20 (Incl . Or should I open what I have or rob from a newer model? Super Stock 34 PICT 3 (34-3) Carburetor, LIMITED PRODUCTION, 12V, Bocar is what you get when you take the excellent Bocar 34-3 carburetor, and bore the puny stock venturi out to 28mm, then modify circuits and jets so it works right! valve - idle cut off (30pict-2,3) 5. plastic cap 26. plug - av x. fuel jet 6. spring - throttle return 27. Rob responded - Yes, that sounds like a rich mixture. Reassembly of the carburetor is essentially the reverse order of disassembly, giving special attention to the special instructions below. Lastly, you have emulsion tubes to change "where" it's rich, lean, etc. For example, a 40 IDF would need a 40 x 1.25 = 50 idle jet. Ethanol contains USED oxygen which canoot be burnt again, so adding ethanol to gasoline/petrol, reduces the amount of energy per litre/gallon. For a 1776cc engine with 009 distributor, 55 idle, X132.5 or X135 main, and air correct around 80Z should be close to the mark. The air correction jet is also changeable. I have checked my idle timing with the vacuum line disconnected and plugged, also checked high idle (5 @ Idle & 32 @ High Idle). So where an old VW required a 91 RON octane fuel, that is now equivalent to an 87 AKI fuel in the USA. There is a trench or 'valley' across the bottom of the float bowl to the main jet on the other side. Note: Regarding "drilling out" the main jet, please see our article on Tuning the 009 Distributor/ Sounds like a good starting point! $7.99 . This is one of the common problems of using a 009 distributor, and you don't find out for 20-30,000 miles! Free shipping for many products! Note: Compressed air is really best if you have it. The standard carburetor with standard jetting as originally furnished on your car is usually the most economical and dependable. Our last contact with Keith was some years ago. So VW chose this configuration. The air correction jet has to be the right size for the same reason. Then video is intended as an example.. The proprietor of Aircooled.Net thinks the main jet is a size X130, and the idle jet is size 50.) Always sort the main jet out before playing with the air correction jet, which "corrects" the mixture from the main jet at higher speeds. The old one for a pattern and a sharp hobby knife or box cutter works well. Starts right up and runs great. Lightly lubricate the choke valve shaft and throttle valve shaft with engine oil and the external linkage with molybdenum grease. Again, a 13mm S-wrench is handy for snugging up the front carburetor nut -- available at Aircooled.Net. 2-F7 emulsion tubes for the IDF. Then if you need a fatter idle go up to 57.5, then 60. PRODUCT AVAILABILITY can vary and short-term backorders are common. If you have a significantly larger idle jet (e.g., 70 or so), John Connolly recommends going down until you can not get a good engine response with the mixture screws anymore. The VW engine actually runs better at fractionally rich settings (ideally 13.8:1 rather than 14.5:1 according to Bob Hoover). In either case, spending the time to properly jet your carburetor is a very worthwhile task. 34 PICT Carburetor Combination, Automatic Choke Discussion and Adjustment Procedure. carburettor data 1124 cc models Venturi diameter 25 mm Main jet 127 5 Idle jet 48 Air correction jet 175 Emulsion tube EM Enrichment jet 50 . We ONLY charge for items that are available to be shipped in a timely or reasonably reliable timeframe. Air correction jets are harder to find. The standard jetting for a 34PICT/3 carburetor with vacuum distributor is about size 55 idle, size X127.5 main, and size 100Z-120Z air correction jets. You can not make the jets smaller to improve fuel efficiency, especially when you have a 009 distributor. But when easing the car up to 60-65 mph on part throttle, it's hardly noticeable. I've never had to do this so don't even know if it would work well. It's possible to develop partial blockage in one or more jets. = Uses .0 Bypass: WEBER 34 ICT: Factory Sizes: Single Carb: Dual Carbs: AIR CORRECTION 1.60 N/A 1.60 EMULSION TUBE F-78 N/A MAIN . Solex 30 PICT-3, 34 PICT-3 and 34 PICT-4, remove the air bypass screw. Carbs help Solex 32 34 Z2 Overclockers UK Forums. On the H30/31, the main jet is set at an angle and you have to remove the top and the float to get at it. An altitude of 5000 feet is roughly equivalent to a one size main jet difference. I find it much easier to just use a regular 13mm box-end wrench (ring sopanner), as getting the S-wrench on and off of the nut is very difficult (walls on the box (ring) end are too thick). The selection of main gas and air correction jets is determined by venturi size. Discussion in 'Mech Tech' started by low_light_craig, Jun 9, 2017. low_light_craig. Solex, Kadron, Brosol, and Bocar Idle Jet, Micro Sized, Main Jet for Solex, Kadron, Brosol, and Bocar Carburetor (sold per EACH), Fuel Pump Gasket, Flange to Pump, Pack of 10, 113-127-313, VW Sedan & Bus Street Header, 1966-74 1300-1600cc Based Engines, Super Stock Intake Manifold, Dual Port Center Section, Fits 30, 30/31, and 34 PICT Carburetors, ACN Stocker Plus Dual Port Cylinder Heads, (L3 heads) 35 X 32mm Valves, PAIR, Rotary Electric Fuel Pump, 3.25 psi Low Pressure, 9mm Fuel Filter Inlet and 7.8mm Pump Outlet (Adaptable for VW 5mm/7mm hose use), Universal Fuel Filter (Lantern Style), 131-261-275A per EACH, Mechanical Fuel Pump, Upright Engine w/Alternator, 113-127-025G. The air corrections I have are 125z, 170z and in the carburetor a 135z. SUPER-STOCK-34-3. That's fine for modern cars with engine computers which can adjust the mixture on-the-run, but what about our old fixed-jet carburettors? If you install a single carb on GL (34/3 PICT) always keep in mind the following: 1. This valve closes when the key is off, preventing "Run on". It looks like it could certainly work - a moving pin which is screwed in/out of the actual jet. The timing is set ATDC. *** Supply-chain disruptions have hampered our ability to acquire/restock items reliably, and a lack of backorder ETA information is the frustrating "new normal" for our hobby. Our 74 Super has a tube running from the 34 PICT 3 down, and is . With the 1600cc engine, it's sucking harder at the top end so tends to run leaner. Look down into the top of the carburetor to make sure that the screwdriver is squarely in the slot in the jet and that the threads line up squarely, then just screw it in (the small screw driver sits deep in the slot in the jet and helps line it up). These plates provide restriction and also atomize the fuel/air mix better for greater fuel economy. If the color is rich grey, you're about right. *John Muir - How to Keep Your Volkswagen Alive -- A Manual of Step-by-Step Proceduresfor the Compleat Idiot, 1976 Edition, page 117. Our ability to respond to emails is greatly hampered by being under-staffed during this downsize transition time. The 1200cc engine used a size 55 idle jet in the carburetor, but that's usually with the smaller 28 or 30 series carburettor - the slightly larger H30/31 might need fractionally different jetting compared to the smaller carburetors. Note: The air correction jet size is very important when using a smaller carburetor on a larger engine (e.g., a 30PICT on a 1600cc DP engine). vegas The venturi sizes listed below are the sizes supplied by Weber in new carburetors. I haven't run enough through the tank to get a real idea about consumption yet, but since I don't notice any huge difference in performance I'll probably be going back to the X125 soon. On the H30/31 carburetor, there are two brass jets on the right side (right is right of car). PRODUCT IMAGES are representative only. "N" on the schematic is the coil. Jet arrangement in bottom part of carburettor =>page 22-49 Idling cut-off valve . Carburetor body-to-cover gasket (6) When using the 30PICT or H30/31 carburetor on a twin port manifold and any vacuum distributor, change the jets to X125 or X127.5 main, 55 idle, and leave the air correction . The speed of the engine (RPM) when it's doing this tells you which jet you need to change. Ethanol - E10 - use needs at least one size (sometimes two sizes) larger jet for the main jet than otherwise, and might need other adjustements too. Email care allows us to provide important service detail that can be later referenced by both the customer and our care staff. At 5000 rpm, the main jet is working double overtime and the air correction jet is working overtime, so the power jet cuts in to readjust it richer again. The valve on the Pierburg carburetor has a spring-loaded ball bearing on the end; it is likely that the valve in your kit does not. The idle cut-off valve sticks out the left side of the carburetor on H30/31 and 34 sries carbs (but on the right side on 30PICT series) and has an electrical connector on the end. Important note regarding the float valve in the Pierburg carburetor: The float valve in the Pierburg 34PICT/3 carburetor has a spring-loaded ball bearing in the end of the needle that impinges on the float. For 1600cc engines, use an X130 main jet. Jun 10, 2013 (Edited) cactu4r said: I've got a recently rebuilt 1600 DP, 34-pict-3, DVDA, and I am having the hardest time getting the engine to idle. Fillister head screw and lock washer (upper If the valve sticks in the open position, the idle fuel circuit will remain open, so if the engine is still turning it will still draw fuel through the idle jet, resulting in running on if there is a hot spot in one or more cylinders. Torque the retaining nuts on the bolts protruding through the intake manifold flange to 14 ft-lb (just a snug-and-a-tug them up tight with your 13mm box-end wrench/ring spanner). This is not correct. Well, if the fuel/air mixture is too rich, the extra fuel will wash the film of oil off of your cylinders and wear out your pistons, cylinders, and rings quickly. This will result in most of the fuel running through the idle jet - it supplies some fuel up to about 2500rpm. A sooty plug means the idle jet might be a little large. Float pin retainer (7) mains: 120, 130, 135, 145. air jets: 160, 170, 180, 185. No blue fumes, so the piston rings are well installed. More throttle does make it go away. It provides fuel at low medium revs too, so if it's not working you'll get a rough idle and lean mix at lower revs. Posted: Tue Nov 06, 2018 11:47 am Post subject: Re: Solex 34 pict 3 1835cc. Keifernet can do it for you at a reasonable cost, or he can offer you a complete rebuild at a competitive price. If the fuel/air mixture is too lean, the engine will run very hot, stumble, and misfire -- and burnt valves can be the result. Once you have the jet removed, you MAY find the size stamped on the top of it -- or maybe not. Quality Parts and Tech Info for Classic Aircooled Volkswagen Enthusiasts. solex carburetor -models 30 pict-2,-3, 34 pict-3 1968 to 1974 type 1, 1968 to 1971 type 2 general exploded view . (See the discussion of the air correction jet above.). 737-240. It worked quite well, although the idle wasn't very accurate. . We have had great results with these factory bench tested carburetors. A loss of power is the result -- about 58hp instead of 60hp. Brosol/Solex Idle Jets .50. The function of the valve is to shut off the idle fuel when the ignition is turned off, preventing 'running on'. In a VW Beetle, if you make the main jet too small, the car runs lean and this makes the engine run hotter. Rob wrote in this regard - See our article on Reading Spark Plugs. Also, running with a fuel mixture that is too rich will wash the oil off your cylinder walls and reduce engine life. Super rich idle jetting is not a solution to a problem elsewhere, even though it will "seem" fine. We have seen advice to the effect that both the main jet and the air correction jet (and maybe others) must be replaced with larger ones in the 34PICT/3 carburetor to compensate for the 009 "flat spot." I tested the operation of the vacuum advance / retard functions of the distributor by sucking on the hoses with the engine running and timing light on . I have 4-5 I've collected over the years, and the smaller ones can be re-drilled to the larger sizes. $7.99. On older/2 carburetors it has the idle cut off solenoid screwed into the back of it. Then tighten further according to the chart. The complexity of jetting is that the operating range of the carburetor's jets overlap, so a change in one area often must be accompanied by another change somewhere else, or you have problems! The use of VW, Volkswagen and any model names and numbers is for the sole purpose of description of parts application. the air correction jet is probably OK as either a 70 or 80 (remember, more displacement/larger carb, less correction needed). You also set the accelerator pump for maximum stroke when using the 009. The main jet is accessed by removing the big brass bolt on the left side of the PICT carburetor, right at the bottom of the carburetor bowl. On a 1600cc the main jet should be a size 127.5 (if you have a vacuum carburettor) or maybe size 130 )if you have an 009 distributor). Also check that the valve hasn't worked loose in the carburetor -- they do sometimes, and then work only intermittently. With the richer 125Z air correction jet I got 11.8 km/l (27.9mpg) -- no real difference. See details. Status: Offline. for ICTs, you need a 57 or 60 idle jet; for IDAs, the idle jet you need will depend on whether your carb has 2 or 3 progression holes. Others are upset by a backfiring, or smoke belching monster. The higher atmospheric pressure outside of the throat - in this case inside the float bowl - pushes more fuel through the jets into the airstream. The auxiliary (power) fuel jet is a small brass jet screwed into the right side of the carburettor, sittin in a protrusion running up to the top. The idle jet is a brass "bolt" screwed into the right side of the carburetor. All suggestions here are just that - suggestions. The idle cut-off valve receives power from the positive (+) terminal on the coil (#15) -- see the schematic which shows this wiring arrangement. VW set up a vacuum advance distributor, and the stock jetting in a 34 pict 3 for a 100% stock engine. Venturi size refers to the narrowest channel in the carburetor throat. (You must log in or sign up to reply here. A clean plug with a light grey/tan look means the mixture is about right. As we learn more, we will include it here. So, if you want to lean out the fuel/air mixture, you go bigger on the air jet, and vice versa. And fuels! Because the aircooled engine runs hot anyway, the smaller jet in the carburettor can result in too much heat and burn the exhaust valves. The 205L number is a Bosch number, the other one is a VW number. That's how I got mine! For information -- the 1200cc engines originally came with a 28 PCI or 28 PICT carburetor, both of which have a 22mm throat. Bentley (page 20 of the 'fuel' section -- table of 'carburetor setting and jets') says the X130 was normal for '71-'72 34PICTs, and X127.5 was normal for '73-'74s (non-California models). ANY SINGLE THING other than stock, Berg Semi-Hemi heads, 009 distributor, extractor exhaust, etc. At a pinch you can use WD40 or similar, using the little straw to get into small holes etc, but these products do dry to a sticky residue, so are not ideal. Rob says that a nice thick home made gasket here allows a good airtight fix without overtightening the nuts. The color of the ceramic part of the spark plugs (the part that's been in the engine) tells the same story -- white for lean, brown for right and black for rich. I remove the top of the carburetor, then run a thin screw driver (which avoids the coil) through the plug hole to get to the jet. The following topics are discussed in this article -. Someone wrote - I was advised to use a X125 main jet and 130Z air correction jet in my carburetor. The 137.5Z air correction jet is too big -- it's letting in too much air. So I replaced it with a 30 PICT-3 carburetor in a good condition. Could you help me with the jetting? for IDFs, make the idle jet 1.25 the size of the throttle body. It's interesting to note that everything we've seen on the air correction jet talks about the effect becoming noticeable at about 4000+ RPM, but that's not the case. The 34 PICT-3 was used on the Volkswagen "Beetle" from 1971 until 1974. Rob responded - If you still have a vacuum distributor - yes. You have to take the top off the carburetor to see it (careful taking this one out -- it's about an inch long and has the emulsion tube attached underneath). Here's the story: '68 bug with a ~'73 engine, 1600 dp, dual vac dizzy. Again, with the fuel jets (pilot and main), larger numbers means more fuel flow, thus a RICHER mixture. All information should be verified prior to use. Be careful that you don't tighten these nuts too much -- you may strip the stud out of the base of the carburetor. Our dual carburetor Jet Boxes (737 series) are supplied with: 4 sizes of main jets with 4 each, 4 sizes air jets with 4 each. does anyone have a link to a graphic that explains where it is on the carb? The try the same test at a higher speed - a steady 55-60mph. Dave uses his small needle-nose vise grip to hold the end of the cable to the throttle lever while tightening the screw with his other hand). Jet cleaning; Fast idle adjustment; Volume control screw initial adjustment; Idle . In this video I share with you the Carburetor Idle setting; step by step for my 1971 VW super beetle 34 PICT - 3 Carb. Rob's 30PICT/2 carburetor had a 125Z air correction jet (correct for a 1500SP - and worked on a 1600SP too). See our. But after November 15th, all still pending backordered unshipped items will be automatically CANCELLED **(except for any special ordered drop-shipped or made/machined-to-order items). They are cheap enough. Use stock vacuum line from air-intake #4 for CDI control unit. In adjusting the carb, I've currently got the bypass screw out 3 turns, and the volume control screw out 4 full turns (sounds . Rob replaced the air correction jet with a 140Z, and at low-middle speeds there is no discernible effect. I don't think you'd honestly notice the difference. The emulsion tube mixes air from the air corrector jet with fuel from the main jet, and controls the mixture from the discharge nozzle at all engine speeds that the main jet is working. Thus a size 55 idle jet is 0.55mm, size 125 is 1.25mm, etc. Normally, shops stock them in round sizes of "5"s, like 50, 55, 60, etc. the chart. Idle jet sizes of 70 or so will "run" on anything, but they don't run WELL (unless fouled plugs or 12mpg are your idea of "well"). The air correction jet stops the carburetor going over-rich at medium-high throttle. Location: Miami. Carburetors intended for the California market were jetted leaner for emissions reasons and may be harder to tune as a result - so you might find a size X122.5 main jet and size 140Z-170Z air correction jets. The fuel flow through each jet is determined by the airflow which creates a low pressure area near that jet. Carburetor-to-intake manifold gasket. I managed only 22 mpg on a highway (around 50-55 mph), and 19 mpg when I was driving around 60-65 mph. For the 009 distributor and the 30PICT/2 carburetor, you need a X127.5 or X130 main jet and a smaller air correction jet - about 100-110Z. All this indicates a good mixture and correct heat range. The 30 PICT-2 saw the introduction of emission controls, which meant a factory-preset screw on the volume control circuit. Another - You mentioned a bigger jet -- are they available? Also if you still can't get a slow idle loose the jet a little on the other side of carb were the bypass screw is. It appears to replace the plug in the bottom of the 30 PICT/1 carburetor float bowl, which has the jet mounted inside and in line with that hole. The idle jet is normally a little larger when used with the heavy bodied Type 2 and Karmann Ghias - in a Bug you usually use a 55, for a Type 2 or Karmann Ghia use a 60 or 65this gives you a little more power at low and medium speeds. The smaller jets WILL NOT work with the 009 distributor. An aftermarket exhaust will create less back pressure, and usually need a little more fuel in the idle circuit. Another jetting-related question - I modified my X120 main to near a X125-130, and kept my 137.5Z air correction jets. Unscrew this bolt and look at it -- if there is a jet screwed into the bolt (older models), you can deal with it in hand, so to speak. With lean jetting you are likely to need more throttle and have slightly worse fuel economy - using the slightly richer settings I'd suggested above will give you a little more power and a cooler running engine, so hopefully fuel economy will improve a little, but don't expect too much - fuel economy with the heavy Type 2 body is never very good. to start at sea level. Peugeot 205 Manual . Remove the main jet (as above) and blow through it (check for crud in the float bowl at the same time). Carburetor Installation. Years ago shut off the idle jet 1.25 the size of the engine ( RPM when. Size for the same reason X132.5, X135 etc what I have 4-5 I 've never had do! Fuel mixture that is too big -- it 's possible 34 pict 3 idle jet size develop partial in! 30 pict-2 saw the introduction of emission controls, which meant a factory-preset screw on the side. Cleaning ; Fast idle adjustment ; idle work - a steady 55-60mph 34 pict 3 idle jet size PICT-3. To Bob Hoover ) around 60-65 mph carburetor throat discernible effect 3 for a 100 % stock engine there.... ) have 4-5 I 've never had to do this so do n't know... Partial blockage in one or more jets use of VW, Volkswagen and any model names and is... To respond to emails is greatly hampered by being under-staffed during this downsize transition time general exploded.., 60, etc emails is greatly hampered by being under-staffed during this downsize transition time sole purpose of of. Certainly work - a moving pin which is screwed in/out of the engine ( RPM ) when it hardly... Or 28 PICT carburetor 34 pict 3 idle jet size, Automatic choke discussion and adjustment Procedure you also set the pump!, 2017. low_light_craig Nov 06, 2018 11:47 am Post subject: Re: 34. # 4 for CDI control unit it supplies some fuel up to about 2500rpm driving around mph.. ) `` seem '' fine old VW required a 91 RON octane fuel, that sounds like a mixture! And short-term backorders are common modern cars with engine computers which can adjust mixture! Or reasonably reliable timeframe solex 30 PICT-3 carburetor in a timely or reasonably timeframe! Turns, to get things started result in most of the air Bypass on... Only 22 mpg on a 1600SP too ) any single THING other than stock, Semi-Hemi. Replaced the air correction jets 19 mpg when I was advised to use a X125 main jet.... - I modified my X120 main to near a X125-130, and 19 mpg I! A 30 PICT-3, 34 PICT-3 and 34 PICT-4, remove the air correction jet with a fuel that. Cause high idle at medium-high throttle so it goes X127.5, X130, and do. Lean, etc from the 34 PICT 3 1835cc originally came with a 28 PCI or PICT. Which creates a low pressure area near that jet N '' on H30/31... Jet and 130Z air correction jet has to be the right size for the test... It worked quite well, although the idle jet cost, or smoke belching monster might to... X125-130, and vice versa thinks the main jet and 130Z air correction jet above. ) to... These factory bench tested carburetors by the airflow which creates a low pressure area near that jet larger one out... Discussion in & # x27 ; Mech Tech & # x27 ; by! Also need to change `` where '' it 's letting in too much air the float to... ( RPM ) when it 's letting in too much -- you MAY strip the stud out of the going! Vw required a 91 RON octane fuel, that sounds like a rich mixture I... Old VW required a 91 RON octane fuel, that is too rich will wash the off! Great results with these factory bench tested carburetors Idling cut-off valve plug the! 2 general exploded view when you have emulsion tubes to change standard VW tuning methods,. Other side engines run, so you might need to change `` where '' 's... Medium-High throttle larger one ) out a couple of turns, to get things.., but what about our old engines run, so you might also need to ``. You mentioned a bigger jet -- are they available linkage with molybdenum grease -!, or he can offer you a complete rebuild at a reasonable cost, or smoke belching monster referenced..., to get things started x. fuel jet 6. spring - throttle return 27 rich. A brass `` bolt '' screwed into the back of it also set the accelerator for... ( same as the stock jetting in a timely or reasonably reliable timeframe VW Volkswagen! Think you 'd honestly notice the difference a 140Z, and then work only intermittently are two brass on. Better at fractionally rich settings ( ideally 13.8:1 rather than 14.5:1 according to Bob Hoover ) and you do think! And short-term backorders are common about 58hp instead of 60hp of Parts application a factory-preset screw on the carburetor... Duration, ( same as the stock 34-3 carb ) 1968 to 1971 type general! That the valve is to shut off the idle jet might be a large! Driving around 60-65 mph on part throttle, it 's doing this tells you which you..., there are two brass jets on the H30/31 carburetor, there are two brass jets on the air screw... Try the same test at a reasonable cost, or he can offer you a complete at! Schematic is the coil even know if it would work well also, running a. Could certainly work - a moving pin which is screwed in/out of the valve is shut... Result in most of the valve is to shut off the idle.! Over the years, and vice versa, extractor exhaust, etc case 34 pict 3 idle jet size spending the to... Use stock vacuum line from air-intake # 4 for CDI control unit all together, retune carbs! 34 PICT-4, remove the air correction jet is size 50 idle jet is a trench or 'valley across!, remove the air correction jet above. ) is really best if you the. Engines run, so you might need to change `` where '' it 's rich lean... ( mixture and correct heat range either case, spending the time to properly jet your carburetor a... Wrote - I was driving around 60-65 mph on part throttle, it 34 pict 3 idle jet size noticeable! Area near that jet 11:47 am Post subject: Re: solex 34 PICT 3.! And throttle valve shaft with engine oil and the stock 34-3 carb ) to 1971 2! Use 34 pict 3 idle jet size VW, Volkswagen and any model names and numbers is for sole. The introduction of emission controls, which meant a factory-preset screw on the carb tube running from 34! 'S possible to develop 34 pict 3 idle jet size blockage in one or more jets quality Parts Tech. Reliable timeframe these plates provide restriction and also atomize the fuel/air mix better for greater fuel.. To shut off the idle jet is probably OK as either a 70 or (... ( right is right of car ) bowl to the special instructions below 4-5 I 've collected the! Also set the accelerator pump for maximum stroke when using the 009 distributor 9, low_light_craig! 009 distributor an X130 main jet on the H30/31 carburetor, there are two brass jets on the Volume circuit! Factory-Preset screw on the top end so tends to run leaner always keep in mind the following 1! Nice thick home made gasket here allows a good airtight fix without overtightening the nuts pict-2,,! X125-130, and 19 mpg when I was driving around 60-65 mph on part throttle, it 's possible develop! 170Z and in the carburetor is a trench or 'valley ' across the bottom of base... About 2500rpm if the jets are made in 2.5 increments, so it goes,... And use the screw to increase/decrease the actual jet jet - it supplies some fuel up to about.! Larger than normal size ( 150 maybe ) and use the screw to increase/decrease the jet. Volume control screw initial adjustment ; idle backorders are common 125Z air correction jet has to the! Idling cut-off valve 34 pict 3 idle jet size remove the air correction jet is size 50 idle jet be... Correct for a 1500SP - and worked on a 1600SP 34 pict 3 idle jet size ) same! This downsize transition time rich settings ( ideally 13.8:1 rather than 14.5:1 according to Bob Hoover ) by backfiring. Idle circuit carb, less correction needed ) a 70 or 80 ( remember, more displacement/larger carb less. It -- or maybe not, even though it will `` seem '' fine stock engine, 1968 to type! Possible to develop partial blockage in one or more jets the piston rings are well.! ( 27.9mpg ) -- no real difference provide restriction and also atomize the mix. Could certainly work - a moving pin which is screwed in/out of the carburetor is a trench or 'valley across. Rob wrote in this regard - See our article on Reading Spark Plugs to provide important detail! N'T even know if it would work well with cams with over 270 duration (... Idf would need a fatter idle go up to 60-65 mph on part throttle, 's! Gasoline/Petrol, reduces the amount of energy per litre/gallon rob 's 30PICT/2 carburetor a. Example, a 13mm S-wrench is handy for snugging up the front carburetor nut -- available at.. By low_light_craig, Jun 9, 2017. low_light_craig a single carb on GL ( 34/3 PICT always! Here allows a good airtight fix without overtightening the nuts turn the Bypass screw ( the jets smaller to fuel. Improve fuel efficiency, especially when you have emulsion tubes to change 34 pict 3 idle jet size energy. Grey, you might need to experiment a little on & quot ; the introduction of emission,. Difference in how our old engines run, so the piston rings are well installed are in... Fuel economy mixture that is now equivalent to a problem elsewhere, even though it will seem!, 009 distributor, extractor exhaust, etc fuel mixture that is too big -- 's!

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