Hi,
What are the symptoms of a blown power valve on a Holley 4150? I'm still trying to get my car to run correctly but I don't want to strip the carb unless I have to.
However to get maximum manifold vacuum the idle mixture screws only have to be about one eight of a turn out, so I wondered if there as a problem with power enrichment circuit.
Thanks
Holley Carb Power Valve
Holley Carb Power Valve
Tim, I found this info on the Holly web site.
If you have a carburetor older than 1992 (or you have experienced an extreme backfire) and expect a blown power valve,
use this simple test. TEST: At idle turn your idle mixture screws
(found on the side of the metering block) all the way in. If your
engine dies the power valve is not blown.
Derek
If you have a carburetor older than 1992 (or you have experienced an extreme backfire) and expect a blown power valve,
use this simple test. TEST: At idle turn your idle mixture screws
(found on the side of the metering block) all the way in. If your
engine dies the power valve is not blown.
Derek
Derek
Mk.1 Tiger
15400 miles from new
Mk.1 Tiger
15400 miles from new