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How do you find a Vacuum Leak?

510 views 9 replies 9 participants last post by  jeepersid  
What makes you think you have a vacuum leak?
A stock engine at sea level should have about 20" of vacuum at idle.
Something to remember, retarded timing can cause low vacuum reading as well.

If you have it, an acetylene or propane torch will work well without having to squirt fluids around the intake.