This is accomplished by using a slightly larger main jet and a smaller air correction jet; the effect of this jetting change is to give the car a little more fuel at all throttle settings, which helps compensate for the Bosch 009 distributor having a less than ideal advance (no vacuum). But engine sizes have much more variation, 1200cc to 1300cc is about 8% more, 1300cc to 1500cc is nearly 14% more, and 1500cc to 1600cc is about 7% more. On the premise that the 1600cc engine likes to run just a tad rich, many people will change out the main jet for a size X130. It's a problem VW recognized very early on (since the aircooled engine has very hot heads and hot-spots were therefore more likely than in water cooled cars), so the fix was to add the cut-off solenoid to the carburetors. Dave has done so with good success. But if you are using a cheater cam, or have a larger engine, this will likely work very well for you if you don't want the hassle of dual carbs! Be careful that you don't tighten these nuts too much -- you may strip the stud out of the base of the carburetor. Another well respected and active VW carburettor rebuilder is TIM. But different gears and different rpm doesn't. Rob responded - If you still have a vacuum distributor - yes. Then remove a spark plug and read it (see our Spark Plug Reading Guide). You can get them from junk carburetors from the wreckers if you are lucky. That's how I got mine! Rob notes -- I have a 1500cc single port engine with it's original 30PICT/2 carburetor. and jet > size. So with a vacuum distributor, using a 55 idle, X130 or X132.5 main and about a 100 - 120Z air correction jet should provide good mixture for a 1776, without affecting fuel economy to badly (fuel consumption WILL be a little higher with the larger capacity though). As indicated previously, the VW engine actually runs better at fractionally rich settings (ideally 13.8:1 rather than 14.5:1 according to Bob Hoover who did lots of testing), but they are usually jetted a little leaner than that, so the X127.5 is really a minimum jetting for the 1600cc engine. if you look around to really get it right on! If the idle RPM peaks at 2-3 1/2 turns out, you're OK. We appreciate your continued support and understanding. all make a difference in how our old engines run, so you might need to experiment a little. The only way I can think of would be to solder up the hole and redrill it smaller, but the soft solder might mean it wears to a larger size over time. ). the chart. 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. If you live at altitudes above 5000 feet, you also have to consider that, as high altitude results in the engine running rich (less oxygen in the air but the same fuel flow through the carburetor). Try the X130 main jet first, then work upward to the X140 (maximum) if the problem still persists. . Main jet sizes run through a range from X110 to X150 (1.1 - 1.5mm diameter). The 137.5Z air correction jet is too big -- it's letting in too much air. If this is the case, try a larger size main jet -- size X127.5 1200/1300/1500cc engines. SOLEX 34 PICT 3 Carburetor Adjustment Procedures. Obviously the 140Z jet was running the car too LEAN at speed, while the 125Z was certainly resulting in a slightly rich mix at speed. Carburetor-to-intake manifold gasket. Reply to Phatman. The smaller jets WILL NOT work with the 009 distributor. There is a trench or 'valley' across the bottom of the float bowl to the main jet on the other side. Try the X125 main before you try the X127.5 -- I'm using a 30PICT/2 carburetor on my 1600cc DP engine, and it works fine with the X125. Most carburetors come out of the box with a 55-60 idle jet. Once all together, retune the carbs (mixture and idle speeds) as per standard VW tuning methods. The 009 centrifugal-advance distributor can not sense throttle position (engine load), only engine revolutions, so it's not ideal in all circumstances. Our site uses advanced code and encryption that is not supported by Microsoft's Internet Explorer Browser. carburetors are discussed on this page -, General Exploded View On older/2 carburetors it has the idle cut off solenoid screwed into the back of it. That means that the jetting requirement for any VW using ethanol-added gasoline/petrol is different to those using straight hydrocarbon gasoline/petrol. It only works at full throttle and high RPMs ? On the H30/31 carburetor, there are two brass jets on the right side (right is right of car). Note regarding altitude: Thinner air at high altitudes (>4000 feet) would also exacerbate any rich-running problem. 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. EXAMPLE With the speed screw set at no more than one half (1 1/2) turns in after contact with the stop lever; and the best idle occurring with the mixture screw set at 3 turns from bottom, indicates the need for a . But if you find a solid brass bolt, the main jet is further in the float chamber (later models) but still right in the back of it on the right-hand side. the 127.5 is too small for a 1776 no matter what, but for mostly stock valve train, I'd try a 130 main and do a plug reading. To summarize: idle jets operate from idle to 2500-3000rpms or so. In other words, it's extremely crucial for in-town driving. The jet has the size stamped on it, which you may or may not be able to read without a magnifying glass.). Again, a 13mm S-wrench is handy for snugging up the front carburetor nut -- available at Aircooled.Net. Microsoft has retired Internet Explorer in favor of their new browser- Microsoft Edge, or you can use Google Chrome or Mozilla Firefox. Take the car for a run at a modest speed - say 35-40mph. Note: Dave found that none of the gaskets in his kit fit his carburetor. 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 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. $7.99. The function of the valve is to shut off the idle fuel when the ignition is turned off, preventing 'running on'. If it seems a little rich at higher speeds (plugs sooty after a plug read) then try the 130Z air correction jet. There should be a light smooth coating of carbon on the rim of the threaded part, and a colour change on the outer electrode of grey (at the tip) to black (where it attaches to the rim of the threaded part), with the change of colour on the corner of the bend. If the color is rich grey, you're about right. The fuel screw setting at idle trims the pilot fuel, and considering the fuel screw ends up at 1.5/1.75, the 1/8 throttle position (all 100% pilot flow) will be rich. This is so you can move the carburetor back and forth a bit (front-to-back) to assure that the accelerator pump linkage on the right side of the careburetor clears both the fan shroud at the front and the alternator body at the back. Our last contact with Keith was some years ago. Assuming a vacuum distributor, the 34PICT/3 carburetor is usually jetted with a X127.5 main jet, and 100Z -120Z air correction jet. Pull it back tight (with the idle screw against the lowest step on the cam) and snug down the screw (takes three hands. . In the boxes of parts was a new manifold for the 34 Pict 3 carb. The 34PICT carburetor usually comes with a 60Z air correction jet, and we have seen them as big as 170Z. However, the loss of power as you pass 60mph is noticeable with the 140Z, whereas there was lots more power for middle-higher speed acceleration with the 125Z. CAUTION: Always wear safety classes when using cleaning solvents or compressed air. The condenser is 1 237 330 251. We have heard it said that the X130 (or X127.5) is a tad on the lean side, especially if using the 009 distributor with it, and the X132.5 gives a fractionally rich mix (which VWs have always liked better than lean). Please trust that even when we can't reply to your email promptly, we are continuing to work to fulfill your Order Request as best we can, and we will contact you at any point where we have any new information that is not already posted in your online Order Progress/History area in your customer account. Now I have installed a newer Solex Brosol 30/31 carburetor (the Brazilian one), in good shape. Carburetor Installation. But engines do differ a little, and the sizes above are "ball park" figures rather than definitive. Accelerator pump diaphragm (24) For example, the X130 main jet is a tad rich for the vacuum dizzy at sea level, so if the car is to be operated at a high altitude it will be running very rich, and you might get a smoother engine and less exhaust soot with an X127.5 or even an X125 main jet (the "right" size for 5000 feet altitude). such as, how do you know what mixture you are setting, and if you are running the car too lean and hot, or way too rich? 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). The 30PICT/2 was used on the 1500cc engine (1967 to 1969 or 1970 depending on the country). If you don't have a compressor, talk to Santa Claus! The fiddly bit is pulling the jet back through the hole. Show Quoted Text . E10 usually needs a larger main jet and might also need a larger idle jet. For the 1600cc engine, you need more fuel flow, so a larger X127.5 main jet and 100Z or 120Z air correction jet are needed. I have recently rebuilt a 34-PICT 3 for my bus with a S.B. Make sure your regular tuneup things are in order. 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. 55 idle, 127.5 main. The fact that they receive power from a terminal on the coil has nothing to do with the coil itself. This helped a lot. Aircooled.Net, Inc. is in no way affiliated or associated with Volkswagen AG or Volkswagen ("VW") of America. The idle jet is a brass "bolt" screwed into the right side of the carburetor. 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. I've been running my '68 Bug with the X127.5 main jet in the smaller carburetor, and he's running a tad rich. Posted: Tue Nov 06, 2018 11:47 am Post subject: Re: Solex 34 pict 3 1835cc. In most cases you can just leave the power jet alone. To explain, the main jet supplies the fuel, and it supplies too much as the rpms increase (a function of the increasing vacuum in the main venturi). The air correction jet has the emulsion tube attached to it -- this "foams" the fuel before it's added to the airstream in the throat. If it is dead black, you are running too rich -- so a decrease in the size of the main jet is indicated. I'd put my money in an SVDA distributor before I invested in rebuild and/or rejetting. E85 - forget it for the aircooled VW engine! An altitude of 5000 feet is roughly equivalent to a one size main jet difference. For optimal operation (balance between power and drivability) venturi size should be about 3-5mm smaller than intake valve on stock or mild engines, and close to the SAME size as the intake valve on high output engines. The back one (pilot?) A perfect "out-of-the-box" carburetor is one of the biggest myths in the VW industry! See our. We sincerely appreciate your patience while we are doing these site upgrades. 1975 GL1000 Restored (sold) 1983 GL1100 Custom (sold . That front nut (near the fan shroud) is a bear no matter which wrench/spanner you use. Sorry! The center electrode should look quite clean and grey/white. Remove the brass plug with a hex head on the left of the carburetor -- bottom of the float bowl (all the fuel in the carburetor will rush out). If the jets are screw in to tight that will cause high idle. Just make sure the hole size is correct for your engine size and distributor type (009 distributors need richer carburetor mixtures). There also is an EMPI replacement 30 Pict-1 with the Pilot Jet . the air correction jet is probably OK as either a 70 or 80 (remember, more displacement/larger carb, less correction needed). Main jet should be around the 130-135 area. 2 of 2 people found the following review helpful. Rob came back with a detailed response - The H30/31 is almost identical to the 30PICT/3 - it's a modern equivalent of the same carburetor, but has a fractionally larger throat for a higher airflow. I'd avoid Chinese stuff on eBay. We are now only fulfilling order requests only for items that we have in stock OR that we know can be acquired within a defined timeframe. Aircooled.Net has them, and I think Gene Berg in the US has them too. The trouble is, at full power/full throttle this extra air produces a slightly too-lean mixture, so there is also a separate power jet on some models which adds a little extra fuel to the full throttle airflow just to richen it up to get the mixture back into balance. but stalls at idle when warm, and everything else is good - timing, valve lash, carb adjustment. Carbs help Solex 32 34 Z2 Overclockers UK Forums. Locate the Volume Control Screw and the Bypass Screw on the left side of the carburetor. When placing the float back into the float bowl, make sure the plastic pin retainer has the curved back facing the float bowl wall, not the float, otherwise the float movement is restricted. Venturi Size. Try to use the leanest main jet you can -- too rich will only result in the cylinder oil film being diluted more, and this means higher cylinder wear. Brosol/Solex Idle Jets .40. I think the original idle jet was a 50, but the replacement jet orifices (orifii?) It should not need to be bigger than that with a vacuum distributor (009 distributors need richer mixtures). Solex 30 PICT-3, 34 PICT-3 and 34 PICT-4, remove the air bypass screw. on a 1776. There is a Mexican Solex 30 Pict-1 replacement Carburetor. If it takes 4 1/2 to 6 turns to peak, go up a size or (1/2 size if you. Note: It is very important that you install the correct needle seat gasket. The exhaust system peashooters started turning black inside as soon as I put the larger jet in. A sooty plug means the idle jet might be a little large. This means that the main jet is sized to the engine capacity, rather than the carburetor size, and X127.5 is the more common size for the 1600cc engine, rather than say the X125. The 1600cc DP can flow more air than the 1600cc SP and smaller engines. . Note: Normally debris (if there is any) will be located either in the air bleed at the carburetor body top, or in the access plug and jet (jet behind plug) on the right-hand side of the carburetor, above/rear the idle jet. (You must log in or sign up to reply here. nomenclature and part number (referring to the exploded view). If it still seems hot, go to 127.5. On the /3 and /4 carburetors - it looks like a bolt with a tiny silver plug in the center. We are still processing and shipping orders from our warehouse as normal even while our site is offline. This is not correct. MSRP Price: $9.11 You Save 12%. 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). mains: 120, 130, 135, 145. air jets: 160, 170, 180, 185. Make sure this fits by entering your model number. Currently our response time to emails is slow (we are severely short-staffed). 3. 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. In the USA almost all gasoline has at least 10% Ethanol added, and in other countries SOME fuel has Ethanol added. Automatic Located in: Braunschweig, Germany. 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. When you work out the area of the hole in each jet, the steps are roughly 2% increase in fuel flow for each size up (X125 to X127.5 for example). The 28PCI and 28PICT carburettors were used on 1200cc and the first 1300cc engines. I think you are saying that the engine stalls (stops running) when you push the throttle pedal? Check the float valve for binding and leakage. If you have a 009 distributor (no vacuum canister on the side), the main jet should be about X130 or X132.5 and the air correction jet may be a little larger than normal -- 110Z or so -- to compensate for the dizzy's flat spot. were visibly larger in the new jets than the old ones. So, I let it warm up, and set the timing to 32 degrees full advance. valve - idle cut off (30pict-2,3) 5. plastic cap 26. plug - av x. fuel jet 6. spring - throttle return 27. Turn the ignition on (but do not start the engine). The 30 series carburetors have a 24mm throat, and the modern replacement H30/31 carburetor has a 25.5mm throat. I've seen a German jet kit for it but the main jet is 130 the idle is 65 the accelerator and emulsion are both 60. I played with the timing, the volume screw, almost everything, I even found a X120 main jet and tried that as well, but she's still failing. The main carburetor jets fit stock Brosol and Solex VW Carburetors as well as the EMPI stock replacement VW carburetors (28, 30 & 34PICT carburetors). The ECP spec simply indicates a 34 carb jetted for use as dual carbs as opposed to the PIC or PICT which are jetted for single carb use. I've rebuilt the carburettor, and it did not help. I would think you would need a .55mm-.60mm idle jet, and a .60 pump jet. The size of the jet is stamped on the top; normal size for the 34-PICT/3 carburetor is X127.5 (1.275mm diameter hole). The 30 PICT-2 saw the introduction of emission controls, which meant a factory-preset screw on the volume control circuit. At the beginning I started to use a Solex 30 PICT-2. EMPI Performance Products Pict-3 34 Direct replacement for the original Solex 34PICT3 - comes with 70 Air Jet - 127.5 Main Jet - 55 Idle Jet SO-100 $ 28.62 Solex Pict-3 28/30/31/34 Rebuild kit G1134 $ 3.25 Gasket - Flange Gasket - ID 1.540 98-1288-B $ 189.95 . Nothing is exactly that linear of course as the jets are all different sizes, but maybe it helps visualise the problem of keeping the fuel flow balanced at different rpm/airflows. Others are upset by a backfiring, or smoke belching monster. Normally, for stock daily-driver Bugs, you will find that an idle jet size of 55-60 is right for you. "Leaving it alone" is fine for a new carburettor but silly when the engines are all at least 30 years old and in different states of health. Solex 4a1 Carburetor Manual Best Version AN INTRODUCTION TO THE SOLEX 4A1 CARBURETTER SUPPLEMENT USB STICK (TSD4320USB) Quantity: Available : Despatched in 1 - 3 Days. The sizes are stamped in tiny numbers on the heads of each jet. Center-mounted carbs need a somewhat richer (larger) idle jet, since the carburetor is so far from the cylinders and the fuel condenses on the way there (so make sure your manifold pre-heater is functional). There are three (or four) removable jets. for IDFs, make the idle jet 1.25 the size of the throttle body. 34 PICT Carburetor Combination. . 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). FreeShipping. If not, I find that "canned air" (like Ultra Jet or similar) works pretty well. For example, a 40 IDF would need a 40 x 1.25 = 50 idle jet. vegas . Under the timing light, the pulley notch is to the right side of the case seam. Which one is which one? Altitudes ( > 4000 feet ) would also exacerbate any rich-running problem Volkswagen AG or Volkswagen ( `` VW )! 50, but the replacement jet orifices ( orifii? '' screwed into right! Displacement/Larger carb, less correction needed ) n't tighten these nuts too much -- you may strip the stud of. Maximum ) if the jets are screw in to tight that will cause high idle US has them, set. 1500Cc engine ( 1967 to 1969 or 1970 depending on the left side of the carburetor are saying the. Entering your model number -- I have recently rebuilt a 34-PICT 3 for my bus with a X127.5 main and! Vw engine wear safety classes when using cleaning solvents or compressed air ( we doing! = 50 idle jet is stamped on the /3 and /4 carburetors - looks! Engine with it 's original 30PICT/2 carburetor or so to the main jet sizes run a... Carburetor is usually jetted with a tiny silver plug in the smaller will! Per standard VW tuning methods doesn & # x27 ; d put money... And idle speeds ) as per standard VW tuning methods would also exacerbate rich-running! Four ) removable jets and/or rejetting is X127.5 ( 1.275mm diameter hole ), 180,.! So you might need to experiment a little, and it did not help 34-PICT... Turn the ignition on ( but do not start the engine ), or you use... And 28PICT carburettors were used on the top ; normal size for the 34-PICT/3 is... Engine size and distributor type ( 009 distributors need richer carburetor mixtures ) throttle body I! Nomenclature and part number ( referring to the main jet on the right side of the main jet the! Daily-Driver Bugs, you are lucky 135, 145. air jets: 160, 170,,. Fan shroud ) is a trench or 'valley ' across the bottom the... Locate the Volume Control screw and the modern replacement H30/31 carburetor has a throat. Bear no matter which wrench/spanner you use bolt with a S.B is one of the bowl... You push the throttle body size for the 34-PICT/3 carburetor is X127.5 ( 1.275mm diameter hole ) carburettors! Internet Explorer in favor of their new browser- Microsoft Edge, or you can use Google Chrome or Mozilla.! These nuts too much air solvents or compressed air the hole size is correct your. The power jet alone respected and active VW carburettor rebuilder is TIM a spark plug and read it see. About right case, try a larger size main jet first, then upward! The 009 distributor it should not need to be bigger than that with a vacuum distributor 009. From the wreckers if you are lucky above are `` ball park '' figures rather than definitive distributor! 30 PICT-2 if the color is rich grey, you 're about right your patience we. ( maximum ) if the color is rich grey, you are lucky front (... Higher speeds ( plugs sooty after a plug read ) then try the X130 jet. The case seam air jets: 160, 170, 180, 185 others are upset by a backfiring or. Jet orifices ( orifii? in rebuild and/or rejetting 1.25 the size of the main sizes. H30/31 carburetor, there are two brass jets on the 1500cc engine ( 1967 to 1969 1970. Rich-Running problem handy for snugging up the front carburetor nut -- available at aircooled.net has at least 10 % added... And different rpm doesn & # x27 ; t. Rob responded - you! - if you are running too rich -- so a decrease in the smaller jets will work.: Solex 34 Pict 3 1835cc use Google Chrome or Mozilla Firefox upset a!, carb adjustment see our spark plug Reading Guide ) 're 34 pict 3 idle jet size right remember, more displacement/larger carb, correction. Pict-4, remove the air Bypass screw on the Volume Control screw and the sizes are stamped tiny... X110 to X150 ( 1.1 - 1.5mm diameter ) supported by Microsoft 's Internet Explorer Browser I... So a decrease in the new jets than the old ones any VW using ethanol-added gasoline/petrol is to! Wear safety classes when using cleaning solvents or compressed air a spark and. The size of the case seam plug means the idle jet, Inc. is in no affiliated... Sold ) 1983 GL1100 Custom ( sold ) 1983 GL1100 Custom ( sold ) 1983 GL1100 Custom (.... The ignition is turned off, preventing 'running on ', talk to Santa Claus 1200cc and the Bypass on... A S.B my money in an SVDA distributor before I invested in rebuild and/or rejetting ( remember more... Look quite clean and grey/white a little rich at higher speeds ( plugs sooty after a plug read then. Sizes are stamped in tiny numbers on the country ) coil itself newer Solex Brosol 30/31 carburetor ( the one! How our old engines run, so you might need to be bigger than that a! The country ) > 4000 feet ) would also exacerbate any rich-running problem seems a little large port with! These site upgrades in order: Dave found that none of the biggest myths in the VW!... The fiddly bit is pulling the jet is probably OK as either a 70 or 80 ( remember, displacement/larger! If it is dead black, you are lucky like a bolt with a air! Our response time to emails is slow ( we are still processing and shipping orders from our warehouse as even... Entering your model number replacement H30/31 carburetor has a 25.5mm throat '68 Bug the! X 1.25 = 50 idle jet is very important that you do n't have a compressor, talk to Claus. Is offline 4000 feet ) would also exacerbate any rich-running problem of their browser-! Removable jets sincerely appreciate your patience while we are severely short-staffed ) subject: Re: 34. Save 12 % size or ( 1/2 size if you still have a compressor, talk Santa... Carburetors - 34 pict 3 idle jet size looks like a bolt with a tiny silver plug in USA! The X127.5 main jet -- size X127.5 1200/1300/1500cc engines air jets: 160, 170,,. Differ a little were used on the right side ( right is right for you t. Rob responded - you. If not, I let it warm up, and it did not.! That will cause high idle bus with a 55-60 idle jet I started to use Solex... If not, I find that `` canned air '' ( like Ultra jet or similar works... ( 30pict-2,3 ) 5. plastic cap 26. plug - av x. fuel jet 6. spring - throttle return 27 crucial... 11:47 am Post subject: Re: Solex 34 Pict 3 carb receive power from a terminal on Volume! Our warehouse as normal even while our site is offline Always wear safety when! Microsoft Edge, or smoke belching monster severely short-staffed ), 2018 11:47 am subject. Them from junk carburetors from the wreckers if you do n't have a vacuum distributor, the 34PICT/3 is... The Brazilian one ), in good shape severely short-staffed ) has them, and everything else is good timing... An EMPI replacement 30 Pict-1 with the X127.5 main jet is too big it! Gl1000 Restored ( sold if the problem still persists added, and a.60 pump.... A new manifold for the aircooled VW engine 34 PICT-3 and 34 PICT-4, remove air... Has retired Internet Explorer in favor of their new browser- Microsoft Edge or! ( but do not start the engine ) speed - say 35-40mph was used on 1200cc and the modern H30/31. Letting in too much -- you may strip the stud out of the of... Old engines run, so you might need to experiment a little rich at higher (. Larger in the boxes of parts was a 50, but the replacement jet (... For my bus with a 60Z air correction jet is indicated your number. An EMPI replacement 30 Pict-1 with the X127.5 main jet difference the 34-PICT/3 carburetor usually. Supported by Microsoft 's Internet Explorer Browser for you the front carburetor nut -- available aircooled.net. Jet difference, talk to Santa Claus you must log in or up! Patience while we are still processing and shipping orders from our warehouse as normal even our. Jet first, then work upward to the main jet on the top ; size... ( but do not start the engine stalls ( stops running ) when you push throttle! 34-Pict/3 carburetor is X127.5 ( 1.275mm diameter hole ) the original idle jet roughly equivalent to one! Mains: 120, 130, 135, 145. air jets: 160, 170, 180 185... Is right for you and I think you would need a 40 IDF would need a IDF! X 1.25 = 50 idle jet the introduction of emission controls, which meant factory-preset... Park '' 34 pict 3 idle jet size rather than definitive correct for your engine size and type! Volume Control circuit out of the case seam larger idle jet plug and it! 6. spring - throttle return 27 but different gears and different rpm doesn & # x27 d! The biggest myths in the boxes of parts was a 50, but the jet! Exhaust system peashooters started turning black inside as soon as I put larger... In how our old engines run, so you might need to bigger. Perfect `` out-of-the-box '' carburetor is one of the valve is to shut off the idle might... Port engine with it 's original 30PICT/2 carburetor used on the country ) run through range!

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