Question about 1988 Yamaha XV 535 Virago DX

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I have a lexus that has gas coming out the exuast

There is gas coming out of the exuast pipe on my car what would cause that to happen

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  • A Miller May 11, 2010

    Are you absolutely certain that you have raw gas coming out of the exhaust? How did you confirn this? Could it be water? If you do in fact have raw gas coming out of the exhaust, please do not drive your car until it is repaired. a



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The only reason gas would be expelled from the tailpipe is because it is not being burnt in one or more of the cylinder chambers.
The problem has to be an issue with the spark plug or plugs. Either it's firing poorly or not at all. There are several items in the ignition system that would cause this. The most obvious is that the spark plug/plugs have been damaged or are just worn out. Anything from the plug all the way back to the to the ignition control could also cause this. This also includes items like the O2 sensors (oxygen sensor), from the emissions system.
Basically this means that there are just too many items that could cause. Making it virtually impossible to diagnose this without more information.
However, once this problem began it should have generated a diagnostic engine code. This would cause the check engine light to turn on. Once read these codes can give you specific details relating to the vehicle's problem and greatly aid in narrowing down the possible cause. Even if you do not see any warning light illuminated somewhere on the dash you should have these codes read. Because It could be that the warning light has burnt out.

Most auto parts stores like Auto Zone will read these codes for you at no cost. Once you have these codes you can repost with them and either myself or one of the other experts here will gladly help with explaining the possible causes as well as the solutions to repair the problem with you.
I hope this helps out.

Posted on Oct 02, 2009


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