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why would it back fire

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d-bug
Renault 5 Driver



Joined: 13 Jan 2009
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PostPosted: 08:54 - 04 Apr 2009    Post subject: why would it back fire Reply with quote
i have a ZZ1100 and when ever i back off the throttle it back fires , what should i look for on the bike so i can sort this out ?

thanks d-bug Very Happy
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Poseidon
World Chat Champion



Joined: 15 Aug 2008
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PostPosted: 09:19 - 04 Apr 2009    Post subject: Re: why would it back fire Reply with quote
d-bug wrote:
i have a ZZ1100 and when ever i back off the throttle it back fires , what should i look for


Kids... 'kin hilarious when you backfire near them! Laughing

Other than that, it's usually excess unburnt fuel in the exhaust system that causes it. Not sure on a solution though...

Drew
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2002 Ducati Monster S4 (currently restoring)
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lonner
Spanner Monkey



Joined: 09 Jan 2009
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PostPosted: 09:44 - 04 Apr 2009    Post subject: Re: why would it back fire Reply with quote
d-bug wrote:
i have a ZZ1100 and when ever i back off the throttle it back fires , what should i look for on the bike so i can sort this out ?

thanks d-bug Very Happy


hi
have you got a 4 into one fitted as these do this as the mess up the fueling on zzr11 unless its been on the dyno.

if the bike is standard you may have an air leak or the pair valves have been blocked off or removed.

when you change the plugs check them for one that,s white or looks like its overheating as this will be the cylinder thats got an air leak if there is one Thumbs Up
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Pete.
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Joined: 22 Aug 2006
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PostPosted: 10:15 - 04 Apr 2009    Post subject: Reply with quote
A leaking exhaust would be my first guess. If you draw in air at the fron tof an exhaust it allows any unburnt hydrocarbons to ignite in the exhaust. It's what causes popping on the over-run.
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132.9mph off and walked away. Gear is good, gear is good, gear is very very good Very Happy
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Finglonga
World Chat Champion



Joined: 27 Jul 2004
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PostPosted: 10:18 - 04 Apr 2009    Post subject: Reply with quote
Geri wrote:
A leaking exhaust would be my first guess. If you draw in air at the fron tof an exhaust it allows any unburnt hydrocarbons to ignite in the exhaust. It's what causes popping on the over-run.


This.
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d-bug
Renault 5 Driver



Joined: 13 Jan 2009
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PostPosted: 10:39 - 04 Apr 2009    Post subject: Reply with quote
rite ok then i will cheak the plugs when i do it an all so cheak the exhaust aswell

cheers d-bug
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