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

46 questions with no upvoted or accepted answers
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7
votes
2answers
211 views

How much oversize should you target when choosing a throttlebody?

This is in addition to my previous question about throttle bodies. I know it may sound a bit subjective, but I think it has a clear technical aspect, and I have done a considerable amount of homework. ...
6
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0answers
204 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 ...
4
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0answers
111 views

Honda XL250R-C Carb ISSUES

I have a UK Honda XL250R-C 1982 pro link just purchased, I was told it had the wrong carb fitted which was a (PD70A) which is why it was running so bad, I was also given at the time of purchase a carb ...
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0answers
59 views

1st and 2nd cylinder not combusting in dual carburetor'red setup

So I have a Maruti Esteem engine with a dual carburetor on an engine dyno and everything was already installed when I joined this lab. We seem to have a problem when trying to fire the engine. 1st and ...
3
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0answers
51 views

Why might I lose power when I open the gas too quickly?

My 1990 Honda Super Cub has a problem that seems to occur mostly after it gets wet. Sitting in neutral, if I slowly open the gas it will reach full revs easily, but if I twist straight to full ...
3
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0answers
81 views

Weed Wacker Not Running Properly

I have a Remington weed wacker that is ~2 years old. It worked great for the first 2 or 3 months but then I could not get it to work properly. I have tried new gas, new plug, adjusting the idle on ...
3
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0answers
3k views

Is my bike running rich or lean - I have both symptoms

Symptoms of Lean or Rich carb settings on a motorcycle I have a '71 Honda CB350 that is new to me. I recently rebuilt the carbs and replaced the petcock and had it running pretty good for awhile. I ...
3
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0answers
259 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 ...
2
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0answers
30 views

1972 international Harvester Scout II 345 engine - LOUD bang & PLUMES white smoke from engine

Just put water in radiator, heard and felt VERY LOUD BANG from engine and massive amounts of white smoke blew from engine when trying to start. Engine didn't turnover & turned off key ASAP. ...
2
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0answers
415 views

Trying to identify Mikuni carburators on a 2.0l ford zetec engine

The only information I can find on them is stamped on the side, G549.A, T5X6, I believe they came off a Yamaha motorcycle.
2
votes
0answers
85 views

Suspected slow leak in carb, mileage low only when time taken to consume fuel

I have a weird mileage issue in my CB Honda Hornet motorcycle. This is a version specific to India, https://auto.ndtv.com/honda-bikes/cb-hornet-160r It has a 160cc engine. During the first 1000 Kms, ...
2
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0answers
53 views

Royal Enfield Classic 350: Dislocating Carburetor Clamp

I own a classic 350. While starting my vehicle, sometimes the carburetor hose becomes disconnected from the mounted clamp area. Has anyone faced this issue? If you have, please help me out.
2
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0answers
105 views

When I shut the bike down there is horrible fuel smell

2003 Harley-Davidson FXDL. After I shut it off, I get this horrible fuel smell. The bike has Mikuni 42 carburetor, Pingel shutoff valve, carburetor rebuilt, Pingel holding strong. I do not have the ...
2
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0answers
243 views

Honda NX 250 Carburetor vacuum pipes

I'm building up a 250cc grass kart, and I've bought a Honda NX 250 engine for it including a ignition system and carburetor. It is a single cylinder 4-stroke DOHC, simple ignition with 1 magnet on a ...
2
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0answers
276 views

China yy50cc qt-6 scooter fires up but when throttled it will choke out and stall

I can't get it to fully open wide and run. 2013 model, any help would be great. P.S. had a 80 cc modification done and also the jets were upgraded as needed. I'm thinking all my air hoses are out of ...
2
votes
1answer
617 views

Idle RPM is not setting properly sometimes

I have an Apache RTR 180 (Carbureted) Sometimes, when I downshift, and when shifting down to 1st gear (to stand still), the RPM shows somewhere around 2000. The normal idle is around 1200 - 1400 RPM. ...
1
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0answers
30 views

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 ...
1
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0answers
12 views

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 ...
1
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0answers
436 views

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 ...
1
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0answers
17 views

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 ...
1
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0answers
113 views

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 ...
1
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0answers
16 views

1987 skidoo elan carb issues

I am trying to figure out either what model carb I have (to purchase a rebuild kit) or spec settings on the fuel/air jets. Tried to start her up tonight, ran for a minute then got flooded. Anything ...
1
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0answers
36 views

Motorcycle won't start at all

I have a 2006 Honda TMX 155 which has 155 cc 4-stroke OHV honda engine. It was garaged for about two years and I decided to make it my first project to get it up in running. I'm new to motorcycles, ...
1
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0answers
66 views

Trouble Starting Scooter after Replacing Carbeurator

Background Recently my scooter was having trouble getting up to full speed and was jerking slightly, but only when I gave it a lot of gas or going above around 35 miles an hour. After some research, ...
1
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0answers
52 views

Suzuki SD 110 cc

bike almost 9 years old, replaced carburetor once so it is 5 years working perfect. few days ago i changed gas filter because it was looking too sluggy. (petrol filter that not actually installed by ...
1
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0answers
3k views

Engine bogs out at full throttle

It's a 2002 Yamaha vstar 650 classic. Engine quit running overnight. Wouldn't even idle. So far I've fixed the intake leaks, a stuck diaphragm, unclogged two of the jets, replaced the needle valves ...
1
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0answers
55 views

right turn stall, starving for fuel?

I have a 1998 96" s&s with a super e carb - runs great straight up and leaning left turns but when I make a right hand turn it seems to starve for fuel and begins to stall. the turns are leaning, ...
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0answers
300 views

Can someone please tell me what model this mikuni carburetor is?

I've been doing some work on this one, and I'd love to find a diagram or some type of parts book for it. Thanks! Edit: It came off of a suzuki df115 outboard. There are no letters or anything on the ...
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0answers
52 views

2000 Suzuki Intruder 1400 losing Prime

Bought the bike few weeks ago not running and here is where i am today. Bike will start on choke and ide all day. I get on it and give it gas it will die. Only way it will start back up is if i take ...
1
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0answers
1k views

Coleman ct100u engine, no start

Verified igniton system is good, cleaned and gapped plug. The engine is is essentially pushing out gas from the carb side and not wanting to start, I don’t know what else to add I’m not really ...
1
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0answers
49 views

Spark plug fouling every ride

I have a 2004 husqvarna cr125. Was wondering if anyone else was having the same issues with the spark plug fouling out often. Anytime I ride for over 40 minutes or so I’ll have to change the spark ...
1
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0answers
55 views

Float Height old keihin ve17b Carb Honda GB250

I have a GB250 that was fitted with a racing carb. I am trying to go back to stock. The carb I have is a keihin ve17b a Carb. There is only a float needle and a float. The float is plastic and ...
1
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2answers
151 views

Problem with float height on a Honda CB400T

I might have a problem with the float height on my CB400T from '78. It seems to be running rough at a constant speed, however when i accelerate it'll go away until constant speed again. It's like ...
1
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0answers
103 views

Carb adjustment on carb where L and H aren't marked

I'm working on a string trimmer currently whose adjustment screws are not labeled - or the labels have worn off with time. :) For reference, the carb is a Zama. It seems to me that there is a ...
1
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0answers
120 views

Rpm falls below idle when declutching at high rpm

I've got this problem that I can't find the cause of. When starting the engine, which goes very easily, it idles smoothly and stable, rising the rpm a bit still gives no problems. But when driving at ...
0
votes
1answer
30 views

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 ...
0
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0answers
18 views

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 ...
0
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0answers
32 views

Craftsman leaf blower, did I destroy the carburetor?

I have a very gently used Craftsman leaf blower with about a 27cc 2-stroke engine. It never ran all that great, mostly it would start up fine then run for about 4 minutes until it started to slowly ...
0
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0answers
70 views

Best Mikuni BST 40 Carburetor alternative?

i would like to know if any of you know a good cheaper alternative to a Mikuni BST 40 carburetor for my KTM 640 LC4 Adventurer? Thanks
0
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0answers
22 views

Ctx200 not ideling

I'm having issues with my ctx200. It just doesn't want to idle. So the history is that the bike sat for a few months not being driven, so i took the carb off and cleaned it. From then on it started ...
0
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0answers
378 views

Do you screw jets all the way in on a PZ27 carburetor?

I rebuilt a carb from a 150cc chinese atv, after adjusting the mixture and idle screw its now running pretty well. It idles fine (it used to slowly go down until the engine stop), and from 0 to wot it ...
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0answers
107 views

Where to hook up my carburetor hoses on a 1998 Yamaha Breeze

1998 Yamaha breeze Four wheeler. Where do the carburetor hoses hook up
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0answers
307 views

Carburetor float bowl not receiving fuel on a dirt bike

I replaced the leaking carburetor on my kx125 2 stroke with a carb I got on Amazon. Brand name is Koso, it's Chinese. It worked great for about an hour on the track then the bike just died and wouldn'...
0
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0answers
41 views

Engine dies after running for 30sec

so I have an old Renault 4 cylinder inboard boat engine here. it's older than I am and has a carburettor which you initially fill with gas by pumping it manually from an external tank using one of ...
0
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0answers
229 views

Engine won't start without throttle-help when warm

My scooter won't start by using the kick start when warm, without help by twisting the throttle-handle a bit (at the same time as using the kick start). By "warm" I mean it's been stored in a room ...
0
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0answers
40 views

What is the recommended diameter of the Idle Fuel Discharge Port?

My car is a 1987 Toyota Tercel DX Wagon 1452cc 2bl manual driven car. Carburetor of it is a Aisan 14120 Two Barrel carburetor. I heard that the Idle Fuel Discharge Port size affects for the fuel ...