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Honda 1986 trx200sx

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hello all i was wondering if someone can help me.i have a 1986 trx200sx

and my problem is this.its smokes in 5th gear only and it has oil in the muffler.

i was wondering if rings is what causes this or valve guide seals. also i noticed a ticking in the topend so i adjusted the valves and cam chain tentioner andd that didnt help.so i then took off the rocker cover and noticed the cam lobe had a flat spot on it so i ordered a new cam.do you guys think that the cam being worn out made the raddle and the smoke.thanks

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No probley not if you have oil in your pipe you have severe ring wear, or valve seals probley both. If you can do a compression test try that.

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yeah very bad news.i tore the top end off today and the rings are shot,and the piston has alot of build up of carbon on it so it liooks like i,m gonna have to do a topend rebuild on it. thanks for your help

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