John,
>From looking at the Eastwood tester, I would say that the gauge that they
use measures the difference between the line pressure and cylinder pressure.
The other style uses 2 gauges because each gauge only measures the absolute
pressure at the line or cylinder. The operator has to do the math to get a
% leak down.
Sound right?
Peter
'68 TR250
> From: John Uloth <juloth@tir.com>
> Reply-To: John Uloth <juloth@tir.com>
> Date: Tue, 18 Dec 2001 10:24:20 -0500
> To: "Robert M. Lang" <lang@isis.mit.edu>, 6-pack <6pack@autox.team.net>
> Subject: Re: Leaking fuel pump- Leak down test
>
> This is interesting, but how does the tester work with only one gauge.
> As in Eastwood's 46049. Do you have another source?
> Thanks
> John Uloth
> 74 TR6
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