Question about 1981 Suzuki GS 750 L

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I have a recently re-built gs 1000g. she is now an 1100. about six months ago it went in for a rear brake over-haul. then a rear tyre and while we were at it we decided to re-do the slipping starter clutch. yesterday i picked it up and rode about 30 ks. it looks like all the oil has gone and leaked through the air-box. oil fill cap smells of fuel and the liquid coming out smells like an oil/fuel mixture. i also noticed it was idling high. there is no longer oil visible in the window and she don't blow smoke. will there be any damage?

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I think what has happened here is that the fuel inlet valve on one of the carbs is leaking, this filled the crankcase with gasoline, that makes it very thin and it bunrs away the oil in crankcase quickly, is there any damage? Well that will remain to be seen, I have run my old GS550 out of oil once and it didn't damage the engine, that was due to the fact that the engine was a needle bearing crankshaft, this type of design crank needs very little oil to operate, just the spray from the engines moving parts will save it for awhile. If memory serves me the GS1000G also used needle bearing cranks. You may get lucky. In the future make sure the fuel valve to the carbs is turned off when the bike sits, this is really important on older Sazukes. Flush the crankcase out with clean oil, then refill and keep your fingers crossed.

Posted on Mar 22, 2011


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