How to check for vacuum leak?
#3
TECH Senior Member
I usually take some flammable spray (flammable brake cleaner works) and spray around where unmetered air can enter... if the engine RPM goes up around a certain spot then you've gotta leak there
#5
Staging Lane
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Watch it guys!
When spraying flammable stuff - be careful NOT to get it close to hot engine parts. Did that once with carb cleaner - the top of the engine caught fire. Thank God I only melted my vacuum hoses - that was on an early 90's Citation II. TOTALLY my fault!
Good luck.
Steve
Good luck.
Steve