Fuel leal down test? 1991 240sx

#1

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.

#2

wiseman wrote:

Quote:

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

#3

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

Steve Parker wrote:

Quote:

wiseman wrote:
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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Fuel leal down test? 1991 240sx

Nissan Automobiles Nissan Automobiles Discussions (alt.autos.nissan)

Fuel leal down test? 1991 240sx - 12-29-2006 , 01:23 AM

Re: Fuel leal down test? 1991 240sx - 12-29-2006 , 09:38 AM

Re: Fuel leal down test? 1991 240sx - 01-04-2007 , 06:17 PM