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RE: Finding carb vacuum leaks with propane torch

To: "Warren Allen" <warren-allen@triad.rr.com>, "Triumphs list" <triumphs@autox.team.net>
Subject: RE: Finding carb vacuum leaks with propane torch
From: "Randall Young" <Ryoung@navcomtech.com>
Date: Wed, 19 May 2004 21:40:39 -0700
> Okay, somebody please explain to me how to use a propane torch to find a
> vacuum leak. I assume that, with the engine running, you turn on the torch
> gas (unlit) and move the torch around where a leak might be
> occurring. Where
> there's a leak, something changes in how the engine is running. Faster?
> Slower? Rougher?

Exactly what it does may vary depending on how it's running with the leak,
it may even speed up at first and then slow back down (much like lifting the
carb piston) ... all you know for certain is that when the leak starts
sucking propane, the engine note will change.

Randall





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