As long it was premixed,shouldn't be the issue! Would still have adequate lubrication until pump caught up and then would just smoke a little extra.

 

So, I've completed the top and lower end rebuild, having trouble finding the source of the low top end compression.

 

Crank seals??????Bad???????

 

Nope- new seals- they are in correctly
Thanks though

 

Whats low? Lets have a compression number.

Have you done a leakdown on it. You can listen for an air leak or see the % of leakdown.

 

Low enough to where I can keep my finger over the spark plug hole when turning motor over. Low enough to where I didn't even need a compression tester to realize that was the problem.
Havn't done a leakdown but I will. Don't see the gaskets leaking though. When I rebuilt the top end I put new ones in, then I put new ones in again when I redid the bottom end just in case.

 

Well, I thought I was getting fuel, now not so sure. Gonna go spray some gas through the carb or dip the spark plug end in fuel tonight to see if it fires up.

****Is it possible that if the motor is not getting gas or the right fuel/air mix for the top end to lose compression after losing good lubrication ( I lubed the motor well during rebuild) from trying to check for good compression before trying the initial firing of the motor on the rebuild? Thus, causing the rings not to seat right away, losing good lubrication, and leading to loss of top end compression?

I wonder if my carb adjustments are off?????????????????????

 

Heck with it, I'm just gonna repull the top end tomarrow. So much fun.

 

Do the leakdown first. That way you know if you have a ring problem.

 

Do I need to get an actual compessor and leak down tester to do this or are there other ways?