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post #1 of (permalink) Old 05-13-2005, 05:55 AM
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q\'s on a quadrunner

hi all im usually on the suzuki board but i have a few questions on the 86 quadrunner i bought for my 12 yr old
first off it runs good has plenty of power but it smokes terribly. ive odered a gasket kit for it and am going to change the valve seals. do you guys think this is the problem? compression is good . the only other thing is the guy put slick 50 to try to stop the smoking . so i am going to put the right oil in it . any help with this would be appreciated

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post #2 of (permalink) Old 05-14-2005, 06:52 PM
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Re: q\'s on a quadrunner

Valve stem seals certainly aren't a bad idea. However, I'm still betting on rings. Rings can be worn enough (i.e. oil rings) to create smoke but still provide decent compression. But, before you replace the rings, has anyone had it apart? During engine reassembly, oil often gets pushed up the cylinder by the rings, collecting on top, and pushed out the exhaust valve when the engine is turned over. And then, yes, it is now collected in the exhaust pipe. Oil in the now heating pipe loves to make smoke. And it will for quite sometime after. Anyway, I'll stop the rambling. Still betting on rings. Disassemble it and check their gap in the bore. [img]/ubbthreads/images/graemlins/cool.gif[/img]
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post #3 of (permalink) Old 05-19-2005, 04:51 PM
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Re: q\'s on a quadrunner

It is really normal for the older quadrunners and king quads to leak oil out of either the head gasket or the valve cover.

Sometimes it will build and drip down onto the head pipe. Eventually the machines smoke like hell.

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