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Re: How to find a vacuum leak
[Re: sam64]
#2763215
04/12/20 09:41 PM
04/12/20 09:41 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Oreillys brake parts cleaner with the straw on it,spray a little at a time around ports,carb base. If it sucks in the cleaner rpms will increase. This is all I do.. just make sure its flammable... simple and cheap
Last edited by MR_P_BODY; 04/12/20 09:42 PM.
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Re: How to find a vacuum leak
[Re: BSB67]
#2763355
04/13/20 11:00 AM
04/13/20 11:00 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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^^^ yes it may have a leak on the bottom side of the intake & I would think it'd be more likely to happen there than above cuz of the heat/agitation. I'v e thought about introducing it under the valley pan (BB) or under the intake (SB) but that might be dangerous with adding that much flammable agent. EDIT & up top be sure to shield the side of the carbwith a piece of cardboard or paper so the spray dont get sucked into the carb & give you a false positive
Last edited by RapidRobert; 04/13/20 11:02 AM.
live every 24 hour block of time like it's your last day on earth
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Re: How to find a vacuum leak
[Re: bobs69]
#2763363
04/13/20 11:23 AM
04/13/20 11:23 AM
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Joined: Jan 2003
Posts: 18,024 S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 18,024
S.E. Michigan
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I've had the best luck using water. Get it idling, warm it up, and spray any suspect areas. The idle slows down when it sucks in even a small amount of water.
Rich H.
Esse Quam Videri
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Re: How to find a vacuum leak
[Re: TJP]
#2763529
04/13/20 04:35 PM
04/13/20 04:35 PM
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Joined: Oct 2005
Posts: 9,031 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 9,031
Ontario, Canada
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I like an UNLIT propane torch for this, This gets my vote. No mess, Nothing to catch fire. The engine will pick up speed as soon as it sucks in the propane.
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