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V STAR backfireing

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Post by river rat Mon Oct 25, 2010 4:14 pm

V STAR 1100 classic dying at red lights and backfireing any ideas .
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Post by joeyputt Mon Oct 25, 2010 4:21 pm

Is it only doing it at idle...
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Post by river rat Mon Oct 25, 2010 4:29 pm

Also on deceleration Joeyputt .
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Post by joeyputt Mon Oct 25, 2010 4:31 pm

And is it running fine at speed or on the throttle or is backfiring then as well?
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Post by 01YZF6 Mon Oct 25, 2010 4:36 pm

backfiring is a fuel issue.

bunch of things can cause backfiring....
improper jetting,
stuck floats allowing too much fuel to pass by

the dying out can be a result of flooding.

are you noticing any stuttering in the throttle or bike when slowing down?
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Post by river rat Mon Oct 25, 2010 4:40 pm

Running fine at speed and not studdering at throttle .
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Post by Guest Mon Oct 25, 2010 4:46 pm

Have you checked the overflow tubes to see if it is spitting gas out? does it leak gas, smell a strong gas odor?

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Post by river rat Mon Oct 25, 2010 5:12 pm

No gas leaks or strong gas odor . Thanks Mr. Wheelz , you to Joeyputt and 01yzf6.
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Post by joeyputt Mon Oct 25, 2010 5:26 pm

Start with the basics, pull the spark plugs and see what they look like and we can try and help you go from there...they should be dry and a nice golden brown color on the porcelain part and make sure there is no carbon or anything between the electrode on the end...
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Post by hayweed Mon Oct 25, 2010 6:23 pm

Normaly. A backfire through the exhaust on decell is a lean problem. I would look for an exhaust leak or an intake leak. Too much air will cause a decell pop or backfire. If you change pipes without rejetting it will cause this problem because it is too lean. A vacume leak will also cause it to die at idle and at red lights. Have you done anything to the bike recently?
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Post by river rat Tue Oct 26, 2010 5:25 pm

ok I'm back. My wife distracted me. Anyway the plugs looked good Joeyputt.I failed to mention that I added 5oz. sea foam before the backfiring got worse . Hayweed thats all I've done recently . I rode some and filled gas tank again . When I got home it wasn't popping at idle anymore , just backfiring while down shifting . Thank ya'll for responding . Ya'll some good Dudes . pirat
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Post by hayweed Tue Oct 26, 2010 5:35 pm

The backfire while downshifting is also a lean problem. You need to make sure it's not running to lean. You can burn a piston if it's too lean. If it keeps runnin bad or your not sure you can run it buy the shop and I'll see if it's too much or if you can live with it.
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Post by joeyputt Tue Oct 26, 2010 6:52 pm

You are welcome man, we try to take care of and help each other when we can. I agree with Hayweed definately do not run it too lean. Take it by to see Hayweed if you are close to him, I see he is always helping members with technical issues and trust his word.
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