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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9
votes
1answer
69 views

What is the yellow precipitate in my outboard's carburetor?

I've got a 2008 Tohatsu 9.8 HP four stroke outboard. My low speed jet keeps getting fouled and on several occasions, I've found yellow almost crystalline "growths" for lack of a better word inside ...
5
votes
2answers
105 views

Basic operation of a choke valve

As user Steve Matthews pointed out on my last question Car interior rattles on idle The ideal use of a coke is "Use the choke until the car warms up properly. You can reduce the amount of choke ...
19
votes
3answers
1k views

Does a carburettor engine apply fuel at high speeds when the pedal is no longer depressed?

There's a question that is pretty similar to this one except the existing question satisfies EFI engines. EFI question Let's say I roll down a hill at a considerable speed I let go of the gas. Say ...
6
votes
1answer
95 views

Yamaha Seca - Motorcycle Idle problems

My motorcycle (1982 Yamaha Seca 650) has had a strange problem with the idle for a few years now. I have not been able to diagnose it and I'm hoping that someone here might be able to help. It starts ...
8
votes
2answers
47 views

2002 Suzuki RM250 - Dies after warm up, restarts after cleaning wet plug

Has a fresh top end. Carburetor cleaned. Fresh fuel mix. Reed valve looks ok. Air filter and intake, ok. Has good spark. After it dies, the plug is wet. Restarts after cleaning plug? I ...
6
votes
1answer
37 views

carburetor failure in yamaha dt lanza

I have a problem with DT Lanza carburetor and the mechanic said I need to replace all the parts in carburetor. Can I get DT 200r carburetor on the DT Lanza 230, because it is hard to find it's spare ...
4
votes
2answers
33 views

Jetta mk2 petrol, reasons for loss of power other than fueling & ignition

I'm planning on buying a 1989 VW Jetta A2 with a 1.6 carb engine and automatic transmission. The particular car I'm interested in is generally in very good condition, except for being low on power and ...
10
votes
1answer
69 views

Is it possible to fit mashroomhead air filter in Honda Stunner CBF 125?

I have Honda Stunner CBF 125 2009 model. I just need to know is it possible to replace the typical air filter with mashroomhead air filter to improve the bike performance? Is there any other way ...
6
votes
1answer
52 views

Testing automatic choke on a scooter

My Peugeot Speedfight 2 is having trouble starting when cold. I took down the carburetor and cleaned it. The spark plug is also pretty new. I've read that automatic choke can be faulty but I don't ...
4
votes
3answers
80 views

Bad pitting on carburetor causing small fuel leak

I have a Motorcraft 2150 carb which has some pretty bad pitting on the main body. The pitting caused like two small holes and is causing fuel to slowly drip. I can only see the holes from the outside ...
3
votes
2answers
43 views

Temporarily stop fuel going to carburetor

A couple of days back I noticed my 2011 Yamaha Scorpio had begun leaking fuel whilst parked up. Upon close inspection it was just a slow drip coming from a tube near the rear of the bike. After ...
7
votes
1answer
59 views

Vespa PX 150 Fuel and Carbon issue

I am using Vespa PX 150.It is using Contact Point system. The issue is it is consuming fuel more than average and the plug is full of carbon after approx 50 Km.The engine not start unless I clean the ...
5
votes
1answer
28 views

Snowblower - 2 cycle oil without stabilizer

I'm not sure if this is the correct forum for this question. I have some 40:1 mixed gas (for my snowblower) that is about 6 month old with no stabilizer added. I haven't t tried it yet but should ...
3
votes
2answers
111 views

Yiben YB50QT 50cc Scooter - Carburetor Component Identification Question

[![Yiben 50cc Carby port identification ]1]1I am trying to get this scooter going after sitting in a shed at a nursing home for 4 years. I have started by cleaning the fuel tank, installing a new ...
3
votes
3answers
112 views

While raising the accelerator suddenly my bike's speed goes down

While driving, I faced some problem in my bike. when I raise the accelerator suddenly my bike's speed goes down. Anyone knows what is the problem?. I'm using yamaha ss 125 cc bike.
7
votes
1answer
113 views

Rough idle while warming up, goes away after a tiny rev

I have an 84 Ranger 2.8L V6. It seem that nearly every time I start the car, it has a pretty rough idle while it warms up. If I just rev the engine a little bit for a second and release (just barely ...
1
vote
1answer
64 views

ATV engine does not start well

I have a chinese ATV with an engine copied from an ~2006 Honda Foreman 400 (a very simple 1 cylinder 400cc carburetor based engine). It's an exact copy with regards to parts. However it does not start ...
2
votes
1answer
72 views

Tuning an ancient carbureted Honda motorcycle

I was in an accident recently. Tboned by a minivan at an intersection. Totaled my nice bike. My buddy gave me an old rust bucket he had laying around just to get me to work for a few weeks until I ...
2
votes
0answers
46 views

2000 Kawasaki Vulcan Vulcan 800 Throttle Cuts at High Speeds (85mph+) [closed]

The bike starts fine but it coughs a lot when giving throttle in first gear. Runs great 2nd - 5th but when pushing around 85 mph or more the acceleration quits. The engine is still running but feels ...
1
vote
0answers
36 views

How does the choke on my mower work? [closed]

I am wondering if the choke may be part of the reason I am having trouble with my mower. It appears that there is very little force causing it to stay open or closed. I am wondering if there is a ...
1
vote
2answers
50 views

Small engine starts then stops

A craftsman mower did not start at all. I cleaned out the carburetor, cleaned the passages on the bowl bolt. The air filter is clean, the fuel drips in a 1/8" stream without the bowl attached. ...
6
votes
1answer
121 views

What could be the result of this missing o-ring?

Consider this o-ring : And this full diagram if you need a more global view : For completeness sake, here are the real parts : Where the o-ring goes : Where the little hole leads : The ...
2
votes
2answers
352 views

kraftsman lawn mower runs for 10 minutes, sputters and dies

I have a Kraftsmann 550 series push lawn mower with Brigg and Stratton engine that runs for about 10 minutes and then sputters and dies. I can start it again after prime it again, but it will run for ...
4
votes
0answers
234 views

Retrofit Ford 460 For Fuel Injection [closed]

I have a '78 Pioneer Jet Boat with a Ford 460 Big Block V8 as the power plant. Right now it has a Holley carb on it. We just started toying with the idea of converting it from carbureted to fuel ...
5
votes
2answers
674 views

What causes too much fuel for my Briggs and Stratton engine?

I recently bought a generator that uses a Briggs and Stratton 17hp Vanguard engine. Before purchasing the generator, it had not ran in several years. The fuel was stale and the oil needed to be ...
4
votes
0answers
107 views

What causes an engine idle to increase briefly?

I have an 82 Honda 450 Nighthawk motorcycle that I'm rebuilding and I need to tune/balance the carbs. I have them bench-balanced and reset the idle screw on both. Now it runs a lot better, but every ...
1
vote
1answer
257 views

Why my bike shows petrol missing before 2000 RPM in all gears?

I am using Hero Karizma R (225cc, 5 gears). Recently I feel a missing in all gear befor 2000 RPM. Sometimes my bike turn off due to this missing. Usually it happens at 1st/2nd gears. After 2000 RPM ...
2
votes
3answers
386 views

Replacing carburator with EFI

My car has a carburetor which I want to change to an EFI. I want to know what are the possible challenges in doing so, what I can think of are: Finding a match of an EFI which seamlessly replaces ...
4
votes
1answer
2k views

What model carburetor is this? (Mikuni Corp)

Recently, my ATV (a 1997 Yamaha Big Bear 350 2x4) developed a carburetor issue where it would run rich. I took it to a mechanic who says that it needs a new carburetor. However, he was unable to find ...
8
votes
1answer
337 views

Carburettor jetting on installation of aftermarket air filter

I have a 150cc motorcycle and am planning to install an after market air filter(K&N) since the stock one was favoring fuel efficiency and not performance. The bike has a carburetor (Mikuni) not ...
4
votes
2answers
153 views

Lost torque on my Yamaha XVS650

I have a Yamaha DragStar 650 1999. I have a Highway Hawk exhaust and I removed the baffles. Now the exhaust is completely open. When the engine is cold I can start it only if I pull the acceleration ...
4
votes
1answer
45 views

Leaking, then not leaking, carburetor

My '59 Nash say for a few months (ok, a year). I recently got it running again by changing out the spark plugs and fuel filter. We let it run for awhile, then shut it down. That's when we noticed ...
1
vote
1answer
127 views

1974 Ford Econoline E200 Van acts fuel starved after warm up

I have a 1974 Ford Econoline E200 Van with an 8 cylinder with the present symptoms: It starts and runs great, but once is warmed up, it feels like it is not injecting fuel. It loses power and slows ...
4
votes
1answer
380 views

Old gas in 2 cycle engine

I have a 2 stroked engine that sat for over 2 years. I drained the gas and can get it to turn over when I put starter fluid in the carb. it is blowing out a water substance from the muffler and cuts ...
10
votes
1answer
461 views

Does the air screw only affect the pilot jet?

I have a 2 stroke motorcycle, it's Kawasaki KR150. When I try to do some jetting on its carburetor (it's Keihin PWL26), I saw that there's an air screw. So now I've been wondering about this air ...
-1
votes
1answer
222 views

1998 Honda xr650l starting problem

I have a 98 Honda xr650l it won't start ,it only starts when we attach a fuel pump to it(easily).when the fuel pump is removed it won't start again but it's not made to use a fuel pump we took down d ...
1
vote
1answer
154 views

Carburettor Cleaner Additive? how good are they

I'm just wondering whether anyone has any experience with fuel additives that clean injectors and carburetors. I have an old motorcycle that starts, but can't keep it self running for long before it ...
3
votes
0answers
126 views

Inverting the A/C VSV Switch

I bought a 2E Carburetor for my 4G13 Engine. My Problem is that 2E Carburetor Idle Up A/C Vacuum Actuator needs vacuum when the engine is on and when the A/C is On, the idle up vsv will be Off (or no ...
7
votes
1answer
371 views

Old Briggs Dies After Running / Tilt Kills

I've got an old (1988) 8HP Briggs & Stratton engine (195422-0751-01) on a leaf blower with some problems. Symptoms: After ~10 minutes of running okay, (choke open, 1/3 to 1/2 throttle), it ...
3
votes
2answers
2k views

Carburetor question, attempting snowblower repair

I have a Craftsman Snowblower, model 247.889702. Unit is a few years old, and I can't get it to start. Unfortunately, I left gas in it one winter and over the summer and of course when I tried to get ...
4
votes
2answers
140 views

Why does the bike idle lower after balancing carburetors?

I have just balanced my bike's carburetors (they were initially way out of sync) it idles lower and seems to smoke more when I rev it (smells rich). Returning it to it's previous out of sync setting ...
4
votes
2answers
2k views

High altitude adjusment for carb 4stroke. (honda xr650l)

Hi I am having some problems with my honda xr650l (1995). During acceleration I experience a sort of stuttering loss in power. Almost the same feeling as runnning out of gas in the main tank. but the ...
3
votes
3answers
766 views

Derbi Senda 50cc - Low Compression, will not run properly

I have a Derbi Senda SM 50 2005 plate. It has a good spark, however, it's not reading any compression. It's had a new top end and gaskets! What could be wrong? Sometimes it starts when you bump ...
3
votes
1answer
292 views

What does the Carburetor Secondary Venturi Do?

We know that on the left side is the primary Venturi where air and fuel mix together. On the right side is the secondary Venturi. What is the role of the secondary Venturi? Thanks in Advance
0
votes
3answers
405 views

How to increase fuel economy

What is the normal fuel consumption for carburetor type Toyota 3A engine? My 1986 Toyota Carina AT 150 car gives 11 km/l in city and 14 km/l on highways. How can I increase it more? Please advise.... ...
2
votes
3answers
1k views

One cylinder not firing, GSX R 750 W

What could be possible reasons that one of the four cylinders (the left or first one) is not working? It was working before, than it did not, then it did again and now not again. I was able to start ...
2
votes
1answer
3k views

Briggs-Stratton Lawnmower motor losing power

My Toro lawnmower featuring a Briggs-Stratton 7.25HP motor has been losing power lately. It is about 2 years old and I've used the maintenance kit (spark plug, air filter, oil, & fuel treatment) ...
0
votes
1answer
94 views

Can I install nano fuel economizer for carb type toyota 3A engine?

Can I install nano fuel economizer for carb type toyota 3A engine? Will it help to improve fuel consumption of my car without any issue?
0
votes
1answer
586 views

what is the advantage of octane 90 petrol vs octane 95? how it effect to fuel consumtion of a car? [duplicate]

i need to know about advantages of octane 90 petrol VS octane 95 or unleaded. how it effect to fuel consumption of a car?
3
votes
1answer
1k views

How to determine what carburetors will be compatible with a motorcycle?

What are the parameters to determine whether or not motorcycle carbs are compatible with a certain engine? Is it just the size? For example, I have a 1978 Suzuki GS1000 with Mikuni carbs, and it's ...