Question about 1995 Yamaha YZF 750 R

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95 big bear backfire at idle runs smooth above idle also i had brake problem also if he has handgaurds make sure they are not pinhing the line

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Check plug caps for corrosion and plugs gap and have carbs balanced.

Posted on Dec 08, 2009

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Related Questions:

1 Answer

2003 yamaha big bear backfires and won't idle


backfires are caused by a weak mixture and air leaks it may have a blocked jet or low float level.

Oct 20, 2014 | Motorcycles

1 Answer

4 wheeler backfire on start


incorrect air fuel mixture or a leak check for damage to the intake boot or airbox

i need to know more about how its running at low mid and high rpm to help you troubleshoot and you need to check for leaks especiely the intake boot if the intake boot is leaking that will need to be fixed before running the bike asumeing that is ok or fixed run the bike listen to it at idle standing is it surgeing with a good fast acceleration off the line with you siting on the quad ? or just realy rough ticking over with little guts off the line ?

midrange rideing how does it feel is there a bwarrr noise as u accelorate hard or does the engine roar up fast

is it reaching a good top end with good pulling power or poor pulling power

are the backfires constant or mainly whyle slowing down from high revs

if all are effected but there are no leaks then it may be float / fuel level that needs ajustment fuel level in ur float bowel effects all stages of rpm low mid and high

A rich problem gets worse as the engine heats up.



A lean problem gets better as the engine heats up.



hope this helps if u dont fix it your self first try and do them little rpm backfire tests for me itl tell me a lot

Dec 05, 2012 | Yamaha Motorcycles

1 Answer

I got a 95 big bear and i got a problem with a rough idle and back fires


If it's been sitting around for a while it could be the idle jet has a little craip in it (it don't take much) but if it's spitting fuel out then I would make sure the float levels aren't sticking.

Apr 04, 2017 | Yamaha 2005 Big Bear 400 4x4

1 Answer

95 aurora idles rough; runs somewhat smoother as it warms up; yet it backfires if I attempt to accelerate entering expressways. it drives smooth if not accelerating.


We had a similar problem. There was a crack in the air intake plenum gasket. Spraying carb cleaner around it can tell if that's the problem. It will clear up for a few seconds if it is. Not too bad to replace.

Apr 19, 2011 | 1995 Oldsmobile Aurora

1 Answer

It back fired and when i started up it wont idle, runs at 60 mph without using gas


Don't know what caused the backfire, but often the pressure from the backfire causes a vacuum line to come off (usually a large one; brake booster, PCV or similar size). this lets extra air past the throttle butterfly and raises the idle speed. find your vacuum leak and the idle speed should return to normal.

Nov 10, 2010 | 1995 Ford Ranger Supercab

1 Answer

02 Big Bear 400- Hi-idle & backfires while running. Tried cleaning carb & air filter, drained bowl & cleaned with carb cleaner. Could there be aproblem with the choke.


Sounds like the carb could use a cleaning and setting by a professional...install a new plug and a new air filter.. AFTER the professional carb cleaning and setting.,,do this and repost

Oct 16, 2010 | Yamaha 2004 Big Bear 400 4x4

1 Answer

91 ford f150 will idle fires up easy but give gas and backfires multiple and keep holding gas it bacfires multiple bogs down and dieshas 1 vac line off cant locate where it connects


Not sure bout the vac line try looking in the back of the carb. The backfiring could be a timing problem. May be the timing belt slipped. Under the distributor their is a bolt that holds the distributor down. Loosen that bolt and try rotating the distributor either direction while the engine is running and see if it smooths out.

Aug 14, 2009 | 1984 Ford F 150

1 Answer

No front brakes on 95 yamaha big bear atv


gravity bleed. make sure fluid is always full. crack open the bleeder screw and let the brake fluid drip until no bubbles. Then close bleeder top off fluid and replace cap. Now, pull the brake handle. If there is no pressure or has bleed down, the master cylinder is kaput.

Jun 18, 2009 | 1995 Yamaha YZF 750 R

1 Answer

95 elantra runs but sputters and backfires. runs ok on the highwa


This isn't answer but a couple of things to check or do. First has fuel filter been replaced? Start car and put it in gear. HOLD Brake and Give it gas while still holding brake hard!!!! Doess it buck or miss fire? You said it ran bad to highway. Explain Please !!! will answer after you reply.

Feb 03, 2009 | 1995 Hyundai Elantra

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