Inliners International Forums General Discussion Engines Specs needed for a Chevy I6 (cast # GM 3877178)

Repost
do a leakdown check to see what & where it is leaking.

That is a tool w/two gauges. Bring piston to top dead center
(compression stroke) apply compressed air in through the spark plug hole,etc,etc,etc
http://www.pegasusautoracing.com/productdetails.asp?RecId=5380

MBHD