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Backfires when letting off the throttle sparkpugs was not the problem that i thought

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This is usually a symptom of a newly fitted exhaust system (Aftermarket) But as you don't say what Kawasaki you are having a problem with, It is difficult to give a more relevant answer.

Posted on Aug 01, 2013

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Hi my malaguli 125 phantom max is backfiring threw exhaust wen let go and backfires threw card wen rev it plz cud u help


either your timing is not set right (retarded not advanced) or something in your fuel system ? possible water or dirt? you said it is backfiring when you let off the throttle, makes me point to the timing being to retarded.

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Why does my trx200sx backfire when I let off throttle it just started this


Dennis, Maybe try changing your plugs, unburnt fuel may be getting in exhaust because of weak plug.. Read the following links, very informative in telling causes of and some suggested fixes on backfiring. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
http://www.rcramer.com/shop/backfire.html

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Back fires rich exhaust


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1 Answer

No spark in coilpack or sparkpug wire


Hmmmmm....have throttle body checked out!

Aug 14, 2014 | Cars & Trucks

1 Answer

I have a 88 fiero 2.5L it idles beautifully but i put in in drive and it backfires then shuts off


fuel pressure? tbi needs like 14 lbs.
ECM failure is also a thought,they had a habit I recall
The backfire part is odd, would think crank sensor or lock up solonid
but it wouldn't backfire. Tough one ,hoping someone else will
chime in.

Apr 15, 2013 | Pontiac Fiero Cars & Trucks

2 Answers

Vstar 1100 idling rough and backfiring letting off the throttle


It sounds to me that your carbs might be a little gunked up - you mentioned the gas may have been old, so it's possible that the smaller (idle) jets are slightly plugged up. Fresh fuel might do the trick and/or you could try using a fuel system cleaner and water remover. This problem might 'solve itself' with a little time.

As far as the backfire - this might be either from the carb issue or it could be related to that rattle you mentioned - you could have a loose connection at or near the head - this can **** air and cause a backfire.

I hope this helped!

Jun 09, 2010 | 2003 Yamaha V Star 1100 Classic

1 Answer

My yz2f0f starts/runs (idles) fine while being choked, once the choke is pushed in (turned off) and the engine is reved, it backfires and dies. This is all the while I am applying the throttle to keep the...


sounds like you might have some trash in carb being a clogged pilot or main or needle seat in not letting in the proper amount of gas check all passages and use fresh gas if it has been sitting

Nov 10, 2009 | 2004 Yamaha YZ 250 F

1 Answer

Chainsaw shut off as soon as i let go of throttle.changed sparkpug and got new fuel/mixture.still wont try to start


Hi try this ,with a small screwdriver screw the H and L screws in until they stop, not hard , then back the h screw out 1 1/4 turnsnext back the l screw out 1 turn tyhen screw the idle screw in acouple of turns Now this is easier if you can put the chainbar in a viceso the chain can run freely, you dont have to ,but it helps.Start her up run it up to full throttle and screw the H screwin and outuntill it runs the sweetest then back off 1/8 th of a turn,next let it idle if it will, if it wont ,screw the idle screw in a bit till it stays running. THEN screw L in and out also adjusting the idle speed until you get it running not too slow but not fast enough to make th e chain run constantly-=--- try that and see how you go also make sure the air filter is CLEAN, good luck ----"youdoit"

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1 Answer

1988 chevy pickup 4.3 V6 that has constant backfire


bad dis cap or rotor maby a bad plug wire or valve sticking or out of adjusment

Mar 17, 2009 | 1988 Chevrolet C1500

1 Answer

Turned off and backfired


I still think this is a timing problem, most likely with the crankshaft sensor. However, it could also be in the throttle positioning sensor, since you had raised the idle to get it to work momentarily. Also, the mass air flow sensor cannot be ruled out entirely. I would start with the crank sensor, then the throttle positioning sensor. Try these and let me know.

Aug 22, 2008 | 1996 Nissan 300ZX

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