Questions tagged [carburetor]

A device on an internal combustion engine that meters the flow of fuel at a particular dynamic rate into an internal combustion engine

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What could this part be circled in green of this Bizzarini 5300?

The Bizzarini 5300 GT has the Chevrolet 327 l76 small block. In some versions it has the 4 barrel holley and it looks like the regular l76 327 from chevrolets of the day but when they put 4 Weber DCOE ...
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Motorcycle poor acceleration

I have a Yamaha V-Star 650 that bogs down when I try to accelerate. My first thought was the carbs, but she revs just fine with the clutch engaged. I don't think that was the case the last time I had ...
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Audi 100 C3 engine stops mid drive

I have an Audi 100 C3 from 1985 (66kw). It has a carburetor, which is tuned automatically. On random occasion engine stops working mid-drive. This usually happens 2-3 minutes into the drive- engine ...
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Royobi BP42 took off carb cleaned and new fuel lines now starts idols then shuts off but restarts again ould it be gasket where vacuum hole is

Removed carb cleaned reassembled with new fuel lines starts runs for awhile and dies but restarts gasket vacuum hole may be leaking
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Is turning off the engine when stopped at traffic lights bad for the car?

What (if any) mechanical issues will be caused if a person regularly turns off their engine while stopped e.g. a traffic lights? Assuming regular production gasoline-only (non-hybrid) cars as they are ...
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Do carburetors protect intake valves from carbon deposits?

For a long time, most car engines were using multi-point port injection that sprays fuel directly at the intake valves. Today, engines are increasingly commonly direct injected. A problem of direct ...
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Why doesn't my engine rev up when closing choke valve?

So I just installed a manual choke cable on my Mustang 1967 (Holley carb 4 bbl), and upon startup I pull the choke and see the valve close but the engine does not rev up at all. I go as much as to ...
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1 answer
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How to identify a carburetor by measurements

I have looked for {model} carb, I have searched the numbers and letters stamped onto the carb, and I finally resorted to measuring it to just try to find a compatible one based on the size (28mm for ...
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1 answer
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I have a 1983 ford f250, can i straight pipe it?

I have a 1983 ford f250, and I want to know if I straight pipe it, will it mess with my carburetor?
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Carburetor not drawing fuel from tank

So the title is kind of generic, but I am facing a bit of a weird situation. I am going to explain it first, but I also have some pictures at the end that might help. I have bought a cheap 2 stroke ...
2 votes
2 answers
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What causes the noise when carburetors are out of sync?

When carburetors are not synchronized, the engine does not sound smooth. At first I thought this is because the frequency of each piston is different, but I guess that is not possible, since they are ...
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Does a carburetor have constant fuel mass flow, constant liquid volume flow, or constant molecule count flow?

I have a generator with carburetor. It seems to consume a bit more fuel than I expected, 0.44 liters per hour for 386 watt production, or 1.14 liters per kWh. I'm also bit more annoyed by the exhaust ...
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1 answer
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If I start a previously unfueled small engine, do I keep choke on for first pull only or until it starts?

I purchased a small engine inverter generator. It obviously has a carburetor and a choke valve. I just put in the oil and oiled the foam air filter element and am ready to break in the generator with ...
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1 vote
1 answer
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Is it possible to swap the carburetor of a Briggs & Stratton 5hp?

I want to use a 5hp Briggs & Stratton engine for a kart project. That engine is based on a carburetor that is above the fuel tank, pumping the fuel thanks to the diaphragm. I am thinking about ...
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2005 Suzuki katana 600 carburetors not delivering fuel

I have a 2005 katana that was given to me I cleaned the carbs and it ran ok. I was riding it for a few weeks then overshot a corner and crashed, the damage wasn’t too bad scratched some plastics and ...
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My bike is dying on random

Okay so I’ve had this bike (2004 gs500) for roughly two weeks and it’s ran perfect. Today I was riding with perfect preformence when I throttled and noticed it waited a second before doing anything ( ...
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1 answer
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Gas Generator Stalls Every Few Seconds

This is a Champion Global Power Equiptment 9000 Peak Watts/7000 Running Watts (Gasoline) 8100 Peak Watts/6300 Running Watts (LPG) Electric Start Dual Fuel Generator. The following is a video of what ...
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32/36 Weber carb MGB dies when accelerating but when the progressive second butterfly throttle valve opens it revs fine at high rpm

i have a 1977 MGB with a 2 barrel progressive throttle 32/36 Weber carb. it will idle, but if i try moving at low rpm, the engine will jolt on and off. like if i was pressing the gas but rapidly ...
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2 votes
1 answer
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Is my mixture too rich?

I've been running this single cyl scooter with this plug to about 30K KM (~19K miles). Replaced it today and it seems a bit dark. Is the engine's mixutre too rich? enter image description here
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1 answer
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Regular carburettor vs chainsaw carburettor

Could someone explain their differences? By regular carburettor i mean the one which you usually find on motorbikes
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1 answer
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I have a 1999 yamaha r1 and it bogs out really bad

So I've cleaned the carbs twice on this bike and its like it's not getting enough fuel because it will only run on starting fluid and I've cleaned the tank and got new hoses and still the same problem ...
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1 answer
410 views

Wood chipper engine won't start after being turned on side

I have a Merry Mac LSC wood chipper (similar to https://www.mackissic.com/product/mighty-mac-leaf-shredder-chipper-lsc/). I made the mistake of turning it on its side to remove debris from the blade. ...
1 vote
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1987 Yamaha Riva XC125 starts high then falls to low rpms and stalls out slowly after a rough idle

Intro: Hi guys, I wanted to start by letting you all know that I'm new to motorcycles and just vehicle repairs in general and this is my first bike. I believe I have reached the point where my lack of ...
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Gas leaking from carburetor while ATV not running

I bought a Coolster (chinese) atv for my daughter and had to do some extensive work on it. But finally got it good as new, until today. I pulled the atv out of the shed for us to ride and started it. ...
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1 vote
1 answer
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Engine runs with carburetor's idle mixture screws closed [duplicate]

I have a Rochester Quadrajet on my boat and have been attempting to tune it. It seems that I'm getting too much fuel in with my mixture as I'm blowing black smoke. If I close the mixture screws ...
1 vote
1 answer
102 views

Engine hesitating to start when clutch pedal is pressed

Recently I started noticing a weird problem with my car (Maruti Alto LXI 2009, Manual petrol with carburetor) that when I press the clutch pedal and the car is in gear it hesitates (it cranks but not ...
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Plenum in air intake system of automobiles

What is a plenum? What role does it play in the air intake system of cars?Do naturally aspirated engines use plenum?
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1986 Dodge B250 - sudden fast idle and low "thudding" sound from exhaust

My 86 dodge van with the 318 engine recently acted up shortly after starting. This is a carburetted engine with an automatic transmission. I was letting it sit at idle to bring the engine up to ...
2 votes
2 answers
380 views

Vacuum never decreases while leaning out carburetor mixture

I have a Rochester Quadrajet 4MV carburetor that has 2 mixture adjustment pins in the front of the carb. As I understand it, you tune these by continually tightening the mixture screws while watching ...
2 votes
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Carburetor adjustment ordeal: always rich on mid/high revs

So I'm trying to adjust a soviet K-22G carburetor which was placed long time ago in a Chevrolet 235 6L engine. It "works" but I don't seem to find the right spot to make it run as it should. ...
1 vote
1 answer
103 views

Motorcycle V-Twin CV carbs riding poorly on 1/4-3/4 throttle after carb rebuild

Background: The bike Suzuki Intruder VS1400 model 2000, ran fantastic, but started to stall on idle when I used old fuel in it. What I did: I cleaned the two CV carbs. Didn't replace anything. I found ...
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1 vote
1 answer
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97 Corolla won't start. New battery, spark plugs and HT wires. Carburetor coughing smoke

My 97 Corolla won't start. The battery, spark plugs and high tension wires are all brand new. When I try to start the car, it cranks until the carburetor eventually "coughs" and white smoke ...
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Rough idle in Ford Capri mk2 1977 V6 with Solex carburetor

I know internet is filled with questions like this but I'm out of options so I turned into stackexchange as a great source of knowledge. So my old green capri has the rough idle. Car data: Ford ...
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2 answers
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Second butterfly valve in riding lawnmower?

So I am helping out my neighbor with her lawnmower, tuning it up and what not for the summer. I noticed that when running the lawnmower, as soon as you take it off of choke, it revs up as fast as it ...
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What is the plastic plug for on the bottom of an SU HS4 Carburettor Piston?

Please could somebody explain the purpose of this plastic plug on the bottom of my SU HS4 carburettor piston? The lip of the plug protrudes very slightly from the bottom of the piston (shown bottom ...
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Scooter stalling when idle and warm

I have a 50cc scooter gy6 and it dies when stopping at traffic lights or when idle in general. it has a brand new carburator. Things I have noticed: When it is cold it does not do it that often but ...
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4 answers
661 views

Beginner bike - carburetor vs fuel injection

I'm looking to purchase a beginner motorcycle/bike. I would like something that has less maintenance / potential for issues. Which one is less likely to be an issue in a bike - carburetor or fuel ...
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My motorcycle bogs

I have a 2007 Honda shadow spirit 750. My motorcycle Boggs when I open the throttle, it idles fine. When I bought the bike the guy said the petcock was bad and that there are bigger jets installed in ...
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1 answer
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Which model to buy in between TVS Apache RTR 160 4v Carb or FI? [closed]

I am from Lucknow, India. I am planning to buy TVS Apache RTR 160 4v but I am really confused about whether to buy a carburetor version or fuel-injected version of the same. The ex-showroom price of ...
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Why with the addition of a gy6 50to100ccbbk,44 stroker,20mm cvk carb with 33 pilot and 105 main jets does my gy6 engine still nog down?

Gy6 50 to 100cc Tao Tao atm-a1 50 scooter. I've tried: Going up and down on jet sizes Cleaning carb Replaced carb New pod filter Advance timing 2 degrees New cdl Checked fuel flow from carb Changed ...
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Primer bulb not drawing fuel

I had an old 21cc two stroke weedwacker engine that I had lying around and was trying to rebuild it for use in a possible hobby project. It sat with gas for a very long time so I disassembled the ...
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1 answer
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2004 Honda CB599 cylinders 1 and 2 don't run

Hello I appreciate any input you might have. This all started yesterday, I have a 2004 Honda CB599 carbureted. I was using a little tire pump to put air in the tires and the bike suddenly died. I ...
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What is the exact name of this RC nitro engine specific carburator part?

I've a Traxxas Pro .15 engine with me. The rubber boot attached to "Throttle lever" on my carburetor is cracked (picture given below). The engine has been in storage for the last one year. Yesterday ...
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1 answer
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motorcycle sputters and temporarily dies

Recently, my motorcycle (2008 Ducati Hypermotard 1100) has been temporarily dying while riding it, usually on the lower RPMs of the lower gears. I thought it was the heat, but today in the rain it ...
1 vote
1 answer
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Fuel was chocking while entering into the carburetor

I'm having an old model TVS Scooty ES, as the petrol was chocking while entering into the carburetor. After cleaning the carburetor and replacing a new spark plug and I had neither rotated the Air/...
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2 answers
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Coleman ct200u ex minibike starts, then stalls

Have problem with my Coleman ct200u ex that is driving me batty. It starts, runs for about 15 seconds, then dies, almost as if it ran out of gas suddenly or the kill switch was pressed. Will not ...
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1 answer
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Why 3 x 2 barrel carbs on a v8 does not 4 x 2 make more sense with one two barrel per two cylinders

You hear of a "Six Pack" and "Tri-Duce" (carb setup with three two barrel carburetors) ... Wouldn't 4x2 barrels or 2 four barrels be better?
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1 answer
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Unidentified component on carburetor

A couple of days ago I went over to a friend who owns an older KTM motorcycle and as I was having a look on his motor I noticed a component on his carburetor which looked like something electronic but ...
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Sym jet sport 50cc 2 stroke cutting out

Starts up fine from cold, can ride it for around 5mins then cuts out and won’t start until cold, it’s got a good spark, competition and is getting fuel. I’ve change the spark plug, ht lead and ...
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carburetor Leaking gas oil mix when fuel lines replaced

Disclaimer I know this is for a blower not an engine, but was not sure where exactly to pose the ? I'm trying to assemble the fuel lines for the Ryobi BP42 two cycle blower, someone else took it ...

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