Fuel leal down test? 1991 240sx

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wiseman - 29 Dec 2006 07:23 GMT

I lose about 20 psi in 30 seconds. Is this oK? If I pinch fuel line
between fuel filter and gauge, I dont lose the pressure so I know the
check valve or canister or gas tank is leaking. Not sure if this
abnormal.

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Steve Parker - 29 Dec 2006 15:38 GMT

> I lose about 20 psi in 30 seconds. Is this oK? If I pinch fuel line
> between fuel filter and gauge, I dont lose the pressure so I know the
> check valve or canister or gas tank is leaking. Not sure if this
> abnormal.

I would say that is bad. It should be much less like 5psi for 2 minutes.
Sparky

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wiseman - 05 Jan 2007 00:17 GMT

as long as the residual pressure is maintained at 20 psi for half an
hour you are ok.

> > I lose about 20 psi in 30 seconds. Is this oK? If I pinch fuel line
> > between fuel filter and gauge, I dont lose the pressure so I know the
[quoted text clipped - 3 lines]
> I would say that is bad. It should be much less like 5psi for 2 minutes.
> Sparky

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