Our Astra 1.4 16v, Cranks but wont start.
Is the fuel rail pressure regulator fauly???
Fuel rail pressure regulator is very noisy ,sounds like a running tap or a babbling brook. I think its leaking fuel back to the tank when it should'nt.
I know that its job is to dump excess fuel back to the tank, but I've never heard one this noisy plus ive watched the fuel returning by lifting the excess panel on the tank.
And there is poor pressure at the release/shreader valve.
I replaced the fuel pump relay about 18 months ago becouse it had stopped closing.
So i have bridged the fuel pump relays large contacts and it stiil wont start.
I will check the injector pulses and the coil firing signals tomorrow when i have my logic probe.
Is the pressure regulator nornally this noisy? I've not noticed it before.
And I replaced the fuel filter last year as part of the sevice.