Air pressure

[williamcharrison]

I recently replaced the air governor on my 3208 engined BB because
the old one let the pressure build to over 140psi as indicated on the
dash gauge. The new one has an adjustment range of 105-120psi
but the air pressure still builds to an indicated 145psi. is
there something else that could cause this problem? (I checked to
make sure that the exhaust port was free).

Chuck Harrison
Akron, Ohio
90 SP36