On Jan 13, 1:47*pm, stryped wrote:
On Jan 13, 12:18*pm, wrote:

My guess is your carb is bad and you are flooding the engine when
starting - quick-start will not start a flooded low compression
engine. The compression you are getting is not the problem - 99.99%
sure.
Thanks. But why would it be hard to start when the engien sits
overnight? Wouldnt there be exhaust smoke if it were flooded?

Why do you think this engine has such low compression after rebuild?

5-7 PSI isn't much, and might be only the oil reducing the combustion
chamber volume.

The B&S manual doesn't give compression numbers, it says if you can
start it, compression is OK. My mid-1950's lawnmower's compression is
barely noticeable but it almost always starts on the second pull,
often with last year's gas.

If the float is soldered brass, see if it's filling with gas. That
will cause strange intermittent problems and a carb gas leak. It isn't
easy to tell by shaking it and the gas may not drip out. The leaky
float on my HH55 didn't even bubble under water in a vacuum chamber.
Because of it I paid only $200 for a log splitter with a brand-new
(defective) engine.

Jim Wilkins