Carburator cleaner vacuum trick?
09-28-2010, 10:21 PM
#1
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Model: Cherokee
Carburator cleaner vacuum trick?
Sprayed some on the exhaust manifold and my vacuum dropped from low to lower with a very noticable drop in idle. Shouldn't it be the other way around?
09-29-2010, 08:13 AM
#2
Vacuum is entirely dependent on the valve train/ engine RPM so its entirely expected to record lower vacuum readings with lower RPMs. I'm telling you, build that pressure tester, I mentioned in the other thread, and stop guessing.
09-29-2010, 11:02 AM
#5
not the surface of the manifold but the connections to the manifold, or suspected leak areas. the presence of the carb cleaner will cause the idle to drop; there should be no access so nothing should happen.
Its not a hard concept...
Its not a hard concept...
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