Best vacuum for troubleshooting light system
Le Mans Master
Joined: Aug 2006
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From: mount holly NC
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Melting Slicks
Joined: May 2015
Posts: 2,365
Likes: 428
From: Cape Girardeau Missouri
The hand vacuum pumps are all you need. Do not use a motorized vacuum pump of the sort used for HVAC as they are FAR too powerful and can damage the rubber diaphragms and other LOW PRESSURE vacuum components!
Melting Slicks
Joined: May 2015
Posts: 2,365
Likes: 428
From: Cape Girardeau Missouri
Good luck making a leak-free connection from a vacuum cleaner to the system ;( Beyond that a vacuum cleaner is a high volume low pressure device. The vacuum system in your Corvette is low volume and low pressure. The difference between those systems is huge!
Race Director
Joined: Mar 2017
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From: Virginia
Team Owner
Joined: Jan 2006
Posts: 37,637
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From: Crossville TN
If your engine is operational, that is the best source for vacuum. The hand pumps and most mechanical pumps don't have the capacity of producing continuous vacuum level needed to diagnose these complete systems. The hand pumps are only good for detecting leakage in one [plugged-off] component at a time.
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