Newbie here - rebuilding an 81 850

[offthepoint]

If cylinder has been washed down, then it happened a long time ago. When I got it, the petcock wasn't connected at all and the tank had 4 gallons of what-was-once gasoline. What's left of the fuel and vacuum line looks like a small dog tried to eat it.

Cylinder 3 also has compression. Not quite as low as #2 and the addition of some oil didn't bring the reading up as much, but still below Suzuki's specs.

Hopefully I can finish the tank this weekend...

[Steve]

Don't forget that one source of low compression is valve adjustment.

If they are too tight, your compression numbers would be low.

If compression is low due to valves, no amount of oil will help that.

Personally, I would check the valve clearances, make sure they are correct, then do another compression check.

.

[offthepoint]

Don't forget that one source of low compression is valve adjustment.

If they are too tight, your compression numbers would be low.

If compression is low due to valves, no amount of oil will help that.

Personally, I would check the valve clearances, make sure they are correct, then do another compression check.

.

Point well taken Steve. I will check this weekend and report back.