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1985 GS1150ES Engine Rebuild

  • Thread starter Thread starter RoChEsTeR
  • Start date Start date
R

RoChEsTeR

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Hi guys! I really need your advice on this one...After sitting for a year, I decided to bring my GS back to life. Changed the oil (now using 20w50 because it was smoking a little during the last rides), oil filter, spark plugs, and then started it. Blue smoke came out of the exhaust...and never stopped coming out of the exhaust...Thinking it was a jammed piston ring, I used Wynns engine cleaner additive...nothing changed. I ran a compression test which came out as this : 60-150-150-120. I removed the exhaust but didn't see oil deposit in any of the 4 manifold tubes. The 2 bolts holding the manifold to the first cylinder where all oily...and the front of the engine is totally oiled too...but the head gasket seems OK. Do you guys have any idea what could be wrong with the bike and is it worth trying the repair it. Bike has 60000km.
Thanks for your help!
 
Something else to try

Something else to try

HI Mr. RoChEsTeR,

I suppose it could be a stuck ring. I've read here that Marvel's Mystery Oil in the cylinder could free it up if you let it soak for a couple of days. Good luck.

Thank you for your indulgence,

BasCliff
 
I'll give it a try, otherwise I think I might spend the summer without a bike...
Found a piston kit with rings and all gaskets on the Internet so I believe if MMO doesn't do the trick I'll order it and see if I can fix it.
Thanks!
 
Any chance you have checked the valve clearance lately?

A valve that is a bit too tight will certainly lead to lower compression, and if it's really tight, a burned valve. :shock:
Either one of these could also lead to excessive oil consumption. :(

.
 
BassCliff said:
HI Mr. RoChEsTeR,

I suppose it could be a stuck ring. I've read here that Marvel's Mystery Oil in the cylinder could free it up if you let it soak for a couple of days. Good luck.

Thank you for your indulgence,

BasCliff
Click to expand...

ATF will also work pretty well for that if the MMO is not readily available.

Mark
 
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