Finding Elusive Vacuum Leaks

Finding Elusive Vacuum Leaks 
With the myriad of vacuum lines and hoses found on contemporary vehicles, it’s often difficult to locate pesky vacuum leaks. Also, after servicing or installing induction system parts {manifolds, carburetors, TBI or MPFT systems}, vacuum leaks can impair engine idle quality, throttle response and fuel economy. Some mechanics do the following: With the engine idling, squirt small amounts of “quick start” {ether} from an atomized can near any suspected leaks…or even areas where you suspect a leak might be. If the engine changes speed {typically an rpm increase}, you’ve found the leak. Take caution not to spray any of the “quick start” near the engine’s air inlet because any change from applications to this area are not leak-related, and will certainly increase rpm.

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