Method for vacuum testing
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Road Master
Joined: Oct 2012
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From: Beaumont, Ca
Method for vacuum testing
I will be testing my intake manifold for leaks on my carbureted Harley-Davidson Softail. What is the best/recommended method of doing this without blowing myself up or damaging the paint or chrome? Is it by using an unlit propane one pound bottle, carb cleaner, brake cleaner, or WD-40, or is there something else that is safe?
Last edited by cgmartine; Apr 5, 2023 at 02:48 AM.
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Road Master
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From: Beaumont, Ca
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Seen propane blow a carb manifold and all completely off a bike, damned lucky it didn't catch fire.
I use brake clean with the little tube, little spurts does fine and it drops the engine out not speed it up.
I use brake clean with the little tube, little spurts does fine and it drops the engine out not speed it up.
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Road Master
Joined: Oct 2012
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From: Beaumont, Ca
Well sir, you just threw a monkey wrench into my plans. I wanted to stay away from brake clean because I thought it would be bad for the engine paint and the paint on the tank. Now you will have me having second thoughts about using propane. Has anyone heard of an explosion such as he has mentioned?