[Fot] Help! Ambro engine crankcase internal pressures. ????

[Joe Alexander <n197tr4@cs.com>]

 I need to develop a list of possible causes of internal pressures.

It's been going on for a long time, but the Ambro get's attention last.

This list is alive and well and I need help..................TIA

After about 3,000 RPM or so, the pressure builds and pushes oil out regardless
of methods of venting. What are the possibilities?

I really hate to pull the engine without an idea of the cause.

Is there any possibility of a crack in the head that pushes air into the
crankcase?

A list of possibilities would be very useful to me.   Finding the problem
before pulling engine would make me very happy.....begging.



Joe Alexander
A. R. E.
645 1st Street
Jesup, Iowa 50648
319.464.4711  (cell)
n197tr4@cs.com
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