O470 overhauled

[Alberta_Canada]

Colonel Sanders,

Great posts in this thread. The manometer trick is still very much alive and kickin'. It's used in automotives and heavy duty quite often. My dealer uses one as standard procedure on diesel engine checks when excessive blowby is suspected.

[Colonel Sanders]

I think TCM might even have a service letter describing
the use of manometer to measure acceptable blowby
caused by worn rings, instead of using the traditional
60/80 leakdown metric.