Fuel leak down test?

[vancouverbc]

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.

[Q45tech]

Are you saving that the 34 psi reduces to 20-14 psi then stablizes or continues to drop to zero? How long does it take to go to zero?

[vancouverbc]

It stabalizes around 20 psi.

[Q45tech]

If it stays 20 psi for 24 hours that's pretty normal. Shouldn't create any cranking problems.................20psi ~~= 77% of running idle flow [at 34 psi] ecu is designed to function with this psi.

[vancouverbc]

Thanks very much.