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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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6 votes
3 answers
405 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 ...
Eric Fossum's user avatar
4 votes
0 answers
159 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 ...
Kev M's user avatar
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4 votes
0 answers
73 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 ...
Vish_evo's user avatar
  • 576
3 votes
0 answers
114 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 ...
Brendan's user avatar
  • 131
3 votes
0 answers
6k 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 ...
JohnGardnerIV's user avatar
3 votes
0 answers
275 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 ...
Bon's user avatar
  • 201
2 votes
1 answer
330 views

What is the glue called sealing the joint between the air box and carb boots on motorcycles? What's an alternative?

I've got two older motorcycles, one 1992 and the other 1997. They've both got specifically shaped airboxes, and both connect to the carbs through four rubber boots, similar to those that go between ...
Matt Lacey's user avatar
2 votes
0 answers
65 views

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. ...
Aram Alvarez's user avatar
2 votes
0 answers
2k 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 ...
user2676140's user avatar
2 votes
0 answers
84 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. ...
Tbob's user avatar
  • 21
2 votes
0 answers
471 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.
Glenn Somers's user avatar
2 votes
0 answers
289 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, ...
mtmr's user avatar
  • 21
2 votes
0 answers
113 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.
Raja's user avatar
  • 21
2 votes
0 answers
113 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 ...
Steve Salowitz's user avatar
2 votes
0 answers
119 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 ...
paul's user avatar
  • 21
2 votes
0 answers
367 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 ...
Arturs Bolsunovskis's user avatar
2 votes
0 answers
468 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 ...
Michael Calloway's user avatar
2 votes
1 answer
967 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. ...
NANDAKUMAR THANGAVELU's user avatar
1 vote
1 answer
42 views

Engine only runs on full choke

Ford 390 Autolite carburetter Starts ok but only runs on full choke the two fuel needles don’t seem to make a difference. ( they used to be ok before cleaning). This carburettor did work ok, but I ...
Neil Willis's user avatar
1 vote
0 answers
63 views

2 stroke motorcycle is fouling spark plugs after stator change

I got a 1998 Yamaha TDR 125 (4FU) 2 stroke motorcycle. It has a Mikuni TM28SS/1 flat side carburetor. I recently had to change the stator coil (the previous one burned down, due to wet conditions), ...
Erik Csipak's user avatar
1 vote
1 answer
257 views

Scooter wont start or idle without using choke

2007ish Honda activa doesn't start or idle without using the choke. It also bogs down or shuts off when giving 25% throttle (but runs fine with choke, tho it isn't good for the scooty) . I have tried ...
Knight King's user avatar
1 vote
0 answers
41 views

Cannot locate broken part on maintenance diagram - YAMAHA 2018 XV250

The following part broke off the carb, and I don't know what it is and cannot locate it on the vehicle diagrams. As you can see, its just to the left of where the throttle cables attach, and just ...
Taekahn's user avatar
  • 111
1 vote
2 answers
2k views

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 ...
fallais's user avatar
  • 111
1 vote
0 answers
396 views

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 ...
Nicholas's user avatar
1 vote
0 answers
318 views

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 ...
Tony's user avatar
  • 11
1 vote
2 answers
169 views

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 ...
Justin Millerrr's user avatar
1 vote
0 answers
208 views

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 ...
user60826's user avatar
1 vote
0 answers
785 views

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. ...
C_HAD89's user avatar
  • 11
1 vote
0 answers
139 views

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 ...
wojciechz's user avatar
  • 111
1 vote
0 answers
327 views

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 ...
user1083734's user avatar
1 vote
0 answers
68 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 ...
Chris Parmer's user avatar
1 vote
0 answers
31 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 ...
diltsee's user avatar
  • 11
1 vote
0 answers
77 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 ...
user49422's user avatar
1 vote
0 answers
30 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 ...
Ben Phillips's user avatar
1 vote
0 answers
111 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, ...
Gap Trinanes's user avatar
1 vote
0 answers
798 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, ...
Augie Doebling's user avatar
1 vote
0 answers
82 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 ...
zubair's user avatar
  • 11
1 vote
0 answers
5k 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 ...
Nick P's user avatar
  • 11
1 vote
0 answers
70 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, ...
gary's user avatar
  • 11
1 vote
0 answers
697 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 ...
James's user avatar
  • 11
1 vote
0 answers
90 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 ...
Devin's user avatar
  • 9
1 vote
0 answers
5k 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 ...
sjfklsdafjks's user avatar
1 vote
0 answers
60 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 ...
Seth Slattery's user avatar
1 vote
0 answers
114 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 ...
Scott Goodman's user avatar
1 vote
2 answers
269 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 ...
Emil Møller's user avatar
1 vote
0 answers
508 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 ...
anonymous2's user avatar
  • 5,235
1 vote
0 answers
166 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 ...
Bart's user avatar
  • 2,954
0 votes
0 answers
85 views

I have a new NIBBI racing carburetor for my 212cc

I just bought a new NIBBI carburetor for my 212 cc predator motor and the old one only had one line which was the gas line and this one has three so I’m not sure what to do with them one of the lines ...
Jonas L's user avatar
0 votes
0 answers
19 views

Tune carb for short trips

I've got a Honda CB600S (CB600F II) from 2001. When I bought it, the carb was worn, causing it to run way too rich. Fuel consumption was absolutely terrible, see my previous post: Honda CB600S 2001 ...
Daniël van den Berg's user avatar
0 votes
1 answer
83 views

How do I attach this carburetor part on an Evinrude 8HP?

We have an Evinrude 8HP outboard motor from 1996. It had been operating normally until yesterday, when the motor suddenly stopped responding to the throttle. When we opened it up, we found loose parts:...
Tashus's user avatar
  • 109