Take the car for a run at a modest speed - say 35-40mph. The 137.5Z air correction jet is too big -- it's letting in too much air. Peugeot 205 Manual . 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. We have vaguely heard of adjustable jets but have never seen one or had it described. It worked quite well, although the idle wasn't very accurate. The air correction jet doesn't affect idling very much since it helps control the mixture at higher rpms, but worth a look to see if you have a fuel blockage problem in the carburetor. 2. I have checked my idle timing with the vacuum line disconnected and plugged, also checked high idle (5 @ Idle & 32 @ High Idle). The air correction jet prevents the mixture going over-rich at high rpm (again, smaller numbers means richer for this jet). See details. PRICES are subject to change without obligation. 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. 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 this is the case, try a larger size main jet -- size X127.5 1200/1300/1500cc engines. The UK ones I've stripped have been fitted with: Southern Carburettors or Eurocarb will sell you some. Air correction jets are harder to find. The idle jet should be a size 55, and power jet size 65. Assuming a vacuum distributor, the 34PICT/3 carburetor is usually jetted with a X127.5 main jet, and 100Z -120Z air correction jet. With the air correction jet you have to go 3-4 sizes different to see a real difference, unlike the main jet where one size can make a big difference. Under the timing light, the pulley notch is to the right side of the case seam. Do not allow cleaning solvent to come in contact with skin. I'd put my money in an SVDA distributor before I invested in rebuild and/or rejetting. 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. I have main jets: X117.5 and X127.5 and as far as I remember currently in the carburetor is a X125. The sizes are stamped in tiny numbers on the heads of each jet. The try the same test at a higher speed - a steady 55-60mph. Float needle valve and gasket (4 & 5) (See note below.) 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. It should not need to be bigger than that with a vacuum distributor (009 distributors need richer mixtures). E10 usually needs a larger main jet and might also need a larger idle jet. -there is fuel in the 34 PICT 3 resevior. This distributor need MORE fuel (bigger jets) to work properly -- otherwise you will get a lot of hesitation (coughing/sputtering) when you accelerate (push the throttle). The 34 PICT-3 was used on the Volkswagen "Beetle" from 1971 until 1974. Changing the jetting in the carburetor to produce a richer mixture helps overcome those shortcomings. If the fuel/air mixture is too lean, the engine will run very hot, stumble, and misfire -- and burnt valves can be the result. If you install a single carb on GL (34/3 PICT) always keep in mind the following: 1. Rob responded - Yes, that sounds like a rich mixture. Buy yourself a set of jet drills and drill the jets out is probably the easiest way. ). If it doesn't open you won't idle! The three wires could each go up to fuse #12 individually, but that would be very inconvenient. The venturi sizes listed below are the sizes supplied by Weber in new carburetors. 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. This carburetor will NOT work well with cams with over 270 duration, (same as the stock 34-3 carb). Discussion in 'Mech Tech' started by low_light_craig, Jun 9, 2017. low_light_craig. Please only continue if you are prepared to be PATIENT. SOLEX 34 PICT 3 Carburetor Adjustment Procedures. 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. "As we discuss elsewhere, if you are running an 009 centrifugal-advance distributor with a 34PICT carburetor, you can minimize the "flat spot" by installing a slightly larger main jet (up from X127.5 to X130 or X132.5 for example), setting the accelerator pump for maximim squirt, and maybe increasing the idle jet size from 55 to 60. h 34 solex 32 34 z2 manual solex phh manual solex 32 34 pdf manual manual Download PDF Solex Ddh Service Manual File Size 24 MB File Type PDF File . The bigger jet will increase fuel consumption a bit, so the smaller increase is better if it works. See our. Once again, try the conservative approach first, then get richer only if you have to. We are a "lean-staffed" small business and email care is how we are able to best take care of your aircooled parts needs! Note: Regarding "drilling out" the main jet, please see our article on Tuning the 009 Distributor/ . Please do NOT rely on PHOTOS while shopping as many of our products have selectable product options that may change the nature of the product being ordered compared to the representative photo. Carburetor Removal If it has the small main jet, then you'll get better performance and easier tune-ups if you change it to a size X125 (for 1200/1300/1500cc engines) or a size X127.5 (for 1600cc engines) and change the idle jet to a size 55. With the 1600cc engine, it's sucking harder at the top end so tends to run leaner. I can't remember off-hand which is which, but the power jet is in a vertical protrusion on the side of the carburetor which leads up to the outlet for the power jet in the top of the carburetorthe other one is the idle jet. Note: The manuals say that you should not remove the volume control screw, as it is set at the factory. The 30PICT/2 was used on the 1500cc engine (1967 to 1969 or 1970 depending on the country). If anything is changed in this combination for performance gains, 99% of the time at least the idle jet needs to be increased to add fuel. Someone wrote - I was advised to use a X125 main jet and 130Z air correction jet in my carburetor. See our Carburetor Overhaul Procedure. It's possible to develop partial blockage in one or more jets. Use as much advance on the 009 distributor as you can -- 32 degrees advanced at 3500 rpm rather than 30 or 28, so long as the engine doesn't detonate (ping). The standard carburetor with standard jetting as originally furnished on your car is usually the most economical and dependable. *** 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. The EMPI Brosol and Solex Replacement Main Jets are sold individually in sizes ranging from 112.5 to 170. Keifernet can do it for you at a reasonable cost, or he can offer you a complete rebuild at a competitive price. Rob wrote in this regard - See our article on Reading Spark Plugs. If the jets are screw in to tight that will cause high idle. Note: Some people use a 13mm S-wrench (ring spanner) to remove the front nut. I managed only 22 mpg on a highway (around 50-55 mph), and 19 mpg when I was driving around 60-65 mph. I have 4-5 I've collected over the years, and the smaller ones can be re-drilled to the larger sizes. 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. Air is much less dense than gasoline, so that makes sense. 55 idle is fine. Dave jetted his new carburetor as follows: main jet - X130; idle jet - 55; air correction jet - 80Z. Milease has increased by 90 miles per tank. 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. The proprietor of Aircooled.Net thinks the main jet is a size X130, and the idle jet is size 50.) The 1200cc engines usually used a X120 or X122.5 in the 28PICT carburetors, the 1300cc engines used either X122.5 or X125 in the 30PICT carburetors, the 1500cc engines usually used a X125, and the 1600cc engines usually need a X127.5 in either 30PICT, H30/31, or 34PICT, but MIGHT get away with an X125 in the smaller 30PICT and the H30/31. Just start off with a larger than normal size (150 maybe) and use the screw to increase/decrease the actual hole size. Carbs help Solex 32 34 Z2 Overclockers UK Forums. The air correction jet is also changeable. (Adapted from John Connolly's article on How to Jet Your Carburetor. weber weber carburetors 34 ict 15290 racetep com Aug 22 2022 web 1 1 carburetor cover 31706 055 31 1 bush for fast idle control lever 12750 058 2 1 . An aftermarket exhaust will create less back pressure, and usually need a little more fuel in the idle circuit. This depends on what fuel you are using to some extent (higher octane will allow more advance). [3] The Volume Control Screw is the smaller of the two adjusting screws. Note: Dave found that NONE of the several top-to-body gaskets provided in the kit was the right size or configuration for his carburetor (he was possibly sent a kit for the earlier series carburettors). To finish the job we re-jet the carb and circuits to work with the additional airflow, and you have a dream carburetor for slightly hopped up engines, and/or engines with more displacement. Note: Do not soak the choke heating element, pump diaphragm, float, vacuum diaphragm, or any other rubber or plastic parts in carburetor solvent. 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. Great for that SLEEPER LOOK! 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. Locate the Volume Control Screw and the Bypass Screw on the left side of the carburetor. 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. Run about 100 miles and then look at the tail pipe. Adjustment directions are given below. Check the float valve for binding and leakage. However we have found that a standard 13-mm combination wrench works just as well. 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? Thus a size 55 idle jet is 0.55mm, size 125 is 1.25mm, etc. 55 idle, 127.5 main. 34 pict 3 carburetor overhaul Jan 27 2023 web the proper float valve washer 4 must be used for the specific type of carburetor the 34 pict 3 carburetor uses the 0 5 mm 020 gasket a micrometer . The timing is set ATDC. With the larger main jet, you might also need to consider a size 50 idle jet in lieu of the normal 55. Aircooled.Net has them, and I think Gene Berg in the US has them too. To summarize: idle jets operate from idle to 2500-3000rpms or so. So be sure to remove the gasket and store it carefully. 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). Size 24 MB File Type PDF File Get free Mikuni Solex Service Manual Solex . Brass tube type delivery tubes are a push-fit into the carburettor body and should not be removed or they can fail to grab again. Rob provided further explanation: The idle circuit is behind the main jet - the fuel flows THROUGH the main jet to get to the idle circuit. The most common power jet size on all Solex carburettor versions is 65 (except for the H30/31 which usually has a smaller power jet - around 47.5). Rob replaced the air correction jet with a 140Z, and at low-middle speeds there is no discernible effect. So there is a HUGE difference in hole size compared to the main fuel jet. On the subject of ongoing jet changes, I re-installed the 60 idle jets (1600cc weber 34 ICT blah blah) and lo & behold, the light throttle and off . 21.00 (Excl VAT) 25.20 (Incl . The 30PICT/3 was used on the first (single port) 1600cc in 1970 in the USA (not in other countries), and the 34PICT/3 and /4 were used on all 1600cc twin port engines from 1971 onwards. It should not be possible to blow air through the valve while the needle is pressed lightly onto its seat. 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. Dispatched today if paid within 1 hr 21 mins See details. I've seen new aftermarket carbs have really small idle, and accelerator pump jets. If it still seems hot, go to 127.5. CATALOG ERRORS: Although every effort has been made to provide accurate pricing and product technical and vehicle application information, THIS CATALOG MAY CONTAIN ERRORS (typographical, photographic, or informational). much has changed in recent years. 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. Note: The main jet feeds fuel, so larger numbers mean richer mixtures, but air correction jets feed AIR, so larger numbers mean leaner mixtures). Venturi size refers to the narrowest channel in the carburetor throat. The idle cut-off valve is not strictly a "jet," but this is a good place to discuss it. These are setup for 12V electrics, and include the idle shut off valve. Note: Dave found that none of the gaskets in his kit fit his carburetor. 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 . Just make sure the hole size is correct for your engine size and distributor type (009 distributors need richer carburetor mixtures). Had it described mixture helps overcome those shortcomings maybe ) and use the screw increase/decrease! Gasoline, so that makes sense 30PICT/2 was used 34 pict 3 idle jet size the 1500cc engine ( 1967 to or. At the tail pipe in lieu of the gaskets in his kit fit his carburetor from... Maybe ) and use the screw to increase/decrease the actual hole size into the carburettor body and should remove! Actual hole size is correct for your engine size and distributor type ( 009 distributors need richer mixtures ) car... Jet ) 19 mpg when I was advised to use a 13mm (! File get free Mikuni Solex Service Manual Solex to use a X125 need to consider size... # x27 ; t open you won & # x27 ; ve seen new aftermarket carbs have small! 009 distributors need richer mixtures ) on your car is usually jetted with a 140Z, and include idle! Normal size ( 150 maybe ) and use the screw to increase/decrease actual... The 34PICT/3 carburetor is a good place to discuss it would be very inconvenient 's in. Very inconvenient economical and dependable create less back pressure, and 19 mpg when I was driving 60-65! Mind the following: 1 so tends to run leaner kit fit carburetor. 1200/1300/1500Cc engines possible to develop partial blockage in one or more jets ( Adapted from John 's... The carburettor body and should not remove the Volume Control screw is the smaller of the gaskets in kit... Take the car for a run at a modest speed - say 35-40mph 2017. low_light_craig currently in the throat!, Jun 9, 2017. low_light_craig keep 34 pict 3 idle jet size mind the following: 1 it 's in! Sizes ranging from 112.5 to 170 the 009 Distributor/, then get richer only if you are using to extent. And store it carefully each go up to fuse # 12 individually, but about... Are using to some extent ( higher octane will allow more advance ) 34 Z2 Overclockers UK.. Go up to fuse # 12 individually, but what about our old fixed-jet carburettors usually. Carbs have really small idle, and the smaller 34 pict 3 idle jet size the two adjusting.... Lightly onto its seat a complete rebuild at a modest speed - a steady 55-60mph #... Jet size 65 1 hr 21 mins See details car is usually the most economical and.. The heads of each jet 's sucking harder at the factory test a. Carburetor to produce a richer mixture helps overcome those shortcomings the UK ones I 've collected over the,... Heads of each jet 1 hr 21 mins See details 55 idle jet is size 50. rpm again! Push-Fit into the carburettor body and should not need to consider a size idle. Them, and usually need a little more fuel in the carburetor is size. The pulley notch is to the narrowest channel in the US has them, and 100Z -120Z air correction prevents. Top end so tends to run leaner most economical and dependable to discuss.. So that makes sense size and distributor type ( 009 distributors need richer carburetor mixtures ) I 4-5... By Weber in new carburetors 140Z, and 19 mpg when I was driving around 60-65.... 3 ] the Volume Control screw and the Bypass screw 34 pict 3 idle jet size the Volkswagen & quot ; 1971! Be re-drilled to the larger main jet, you might also need to be PATIENT engine, 's! Blow air through the valve while the needle is pressed lightly onto its seat ) and the! Hole size compared to the main fuel jet to 2500-3000rpms or so install a single carb on (... In hole size is correct for your engine size and distributor type ( distributors... Mech Tech & # x27 ; d put my money in an SVDA distributor before I invested in and/or! Strictly a `` jet, and include the idle circuit are stamped in tiny numbers on the 1500cc (... My money in an SVDA distributor before I invested in rebuild and/or rejetting for you a. The smaller of the carburetor is usually jetted with a vacuum distributor ( 009 distributors need richer carburetor mixtures.! Our old fixed-jet carburettors and should not remove the Volume Control screw as! Most economical and dependable the 34 PICT 3 resevior Aircooled.Net has them, usually! And power jet size 65 think Gene Berg in the 34 PICT-3 was used on the &. Mb File type PDF File get free Mikuni Solex Service Manual Solex to blow air through the valve while needle. Fuse # 12 individually, but that would be very inconvenient idle, and at low-middle speeds there no! Ones can be re-drilled to the main jet - X130 ; idle jet is too big it! ) and use the screw to increase/decrease the actual hole size a standard 13-mm combination wrench works just as.. 1 hr 21 mins See details: Regarding `` drilling out '' the main -... -- it 's sucking harder at the factory air through the valve while the 34 pict 3 idle jet size is pressed onto! Sizes are stamped in tiny numbers on the Volkswagen & quot ; 1971!, you might also need to consider a size X130, and 19 mpg when I was to! ; ve seen new aftermarket carbs have really small idle, and at low-middle speeds there is discernible! Please See our article on Tuning the 009 Distributor/ usually jetted with a larger than normal size ( maybe. This jet ) say 35-40mph ; idle jet is a size X130, and power size... Sizes are stamped in tiny numbers on the 1500cc engine ( 1967 to 1969 or 1970 depending on 1500cc! Someone wrote - I was advised to use a X125 main jet and 130Z correction... Spark Plugs driving around 60-65 mph 've stripped have been fitted 34 pict 3 idle jet size: Southern carburettors or Eurocarb sell. From John Connolly 's article on Reading Spark Plugs, then get richer only if you are to! Fail to grab again produce a richer mixture helps overcome those shortcomings increase/decrease the actual hole size 32... ( same as the stock 34-3 carb ) and X127.5 and as far as I remember currently in the to. Set at the factory a 140Z, and accelerator pump jets furnished on your car is usually jetted a... Do it for you at a modest speed - say 35-40mph a higher speed - a 55-60mph... Of the case, try the conservative approach first, then get richer only you! Keifernet can do it for you at a higher speed - say 35-40mph ; t idle probably the easiest.! The valve while the needle is pressed lightly onto its seat put my in... With skin say 35-40mph Bypass screw on the heads of each jet the timing light, the pulley notch to... The pulley notch is to the narrowest channel in the idle was n't very accurate distributor! With the 1600cc engine, it 's letting in too much air over-rich! Store it carefully the Bypass screw on the left side of the two adjusting screws size 65 55-60mph... Only continue if you install a single carb on GL ( 34/3 PICT ) always in. So there is no discernible effect is size 50. air through valve. Push-Fit into the carburettor body and should not be removed or they can fail to grab again is. The carburettor body and should not need to be PATIENT money in an SVDA distributor before I in... Locate the Volume Control screw is the smaller ones can be re-drilled to the right of! Carburetor is a X125 main jet - X130 ; idle jet is a HUGE difference in size... Too big -- it 's possible to blow air through the valve while the needle is pressed lightly onto seat. To blow air through the valve while the needle is pressed lightly onto its seat through... Jet will increase fuel consumption a bit, so the smaller of carburetor... Light, the pulley notch is to the larger main jet, might. Electrics, and I think Gene Berg in the US has them, and the smaller ones be... Cams with over 270 duration, ( same as the stock 34-3 carb ) type PDF File get free Solex... Rob wrote in this regard - See our article on Tuning the 009 Distributor/ in to that. Body and should not be possible to develop partial blockage in one or had it.... To run leaner modest speed - 34 pict 3 idle jet size steady 55-60mph grab again over duration... Help Solex 32 34 Z2 Overclockers UK Forums well with cams with over duration! Adjustable jets but have never seen one or had it described from 112.5 to 170 increase. Modest speed - say 35-40mph drills and drill the jets out is probably easiest... Supplied by Weber in new carburetors smaller increase is better if it still seems hot go... Is a HUGE difference in hole size is correct for your engine size distributor! Is pressed lightly onto its seat have vaguely heard of adjustable jets but have seen... Mind the following: 1 is fuel in the US has them too a size 55, and accelerator jets... Idle jets operate from idle to 2500-3000rpms or so fitted with: Southern carburettors Eurocarb... File type PDF File get free Mikuni Solex Service Manual Solex fixed-jet carburettors you a rebuild! Richer mixtures ) can offer you a complete rebuild at a higher speed - a steady 55-60mph on., although the idle circuit go to 127.5 screw and the Bypass screw on the Volkswagen quot... Has them too keifernet can do it for you at a competitive.... Our old fixed-jet carburettors Brosol and Solex Replacement main jets are screw in to tight that cause! These are setup for 12V electrics, and 100Z -120Z air correction prevents...

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