What's the best way to check for a vaccuum leak on my Ford 302? - Mustang Evolution

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Old 03-12-2010, 11:00 PM   #1
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What's the best way to check for a vaccuum leak on my Ford 302?

I have a 1977 Ford Mustang with a 302 in it with an automatic transmission, and I think I have a vaccuum leak. Does anyone know the best way to check this?
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Old 03-12-2010, 11:12 PM   #2
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What's the best way to check for a vaccuum leak on my Ford 302?

The best way is with a smoke machine. If you don't have access to one, either do a very close visual inspection of ALL vacuum lines, use propane around the intake manifold, or vacuum gauge on all lines. Good luck.
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Old 03-12-2010, 11:40 PM   #3
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What's the best way to check for a vaccuum leak on my Ford 302?

here a trick you can do, take dish soap, with water, spary it on the vac hose ,the one that got the bubblel be , the leak
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Old 03-13-2010, 12:25 AM   #4
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What's the best way to check for a vaccuum leak on my Ford 302?

well a vacume gauge is good start. then start engine . a squirt bottle set on stream,squirt water around vacume connections.the rpm will smooth up when you squirt the problem spots,u can do it!
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Old 03-13-2010, 12:47 AM   #5
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What's the best way to check for a vaccuum leak on my Ford 302?

wd 40
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Old 03-13-2010, 01:30 AM   #6
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What's the best way to check for a vaccuum leak on my Ford 302?

propane with a rubber hose
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Old 03-13-2010, 01:34 AM   #7
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What's the best way to check for a vaccuum leak on my Ford 302?

Soap Bubbles, Vacuum, Bubbles? Its sucks not blows so that wont work. Start engine, spray some WD-40 around suspected area(s), if engine idle changes then you have found your leak...
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Old 03-13-2010, 01:40 AM   #8
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What's the best way to check for a vaccuum leak on my Ford 302?

You can use brake cleaner or a can of quick start. Get 2-3 cans and spray all lines with vehicle running. Listen to the idle, when it drops at a certain area you're spaying at, you found to leak. The other way is by sound sometimes, vac leaks are usually noisy.
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