What's going on with my car? Is it a dying fuel pump?

TBON12 · Post by **TBON12** » Mon Jul 21, 2008 1:26 am

Hey all, my car is starting to run sort of rough and I have checked the usual AFM and ECU plugs and was wondering if I am suffering from a dying fuel pump?
Sometimes the car runs well and other times its slower. Today I was travelling up a hill in third with the foot flat to the floor with 10 psi of boost and the car wasn't going faster then 80.

Any help would be greatly appreciated before I put a sledge hammer through the motor.

Post by **etking** » Mon Jul 21, 2008 9:45 am

boost leak?

BennyET · Post by **BennyET** » Mon Jul 21, 2008 12:26 pm

change the fuel filter

TBON12 · Post by **TBON12** » Mon Jul 21, 2008 6:26 pm

Checked for boost leaks and found none. Changed the fuel filter and am running injector cleaner.
On Saturday morning its was all go and accelerating like no tomorrow, come Saturday arvo it started with behaving badly.

It feels hesitant to accelerate but idles smoothly, its sluggish on and off boost.

I am going to do valve clearances tomorrow night in case its being picked up by the knock sensor and that is retarding the timing.

Also changing the fuel pressure reg for a spare one too.

nismoet · Post by **nismoet** » Mon Jul 21, 2008 10:41 pm

does it have a miss or just no trottle response?

TBON12 · Post by **TBON12** » Tue Jul 22, 2008 12:22 am

No throttle response, well not like it should that's for sure, at the moment I can almost be beaten by a N12 Pulsar.

No miss fire from the motor at all which has lead my brother and I to think its a fuel problem.

As we speak I am relocating the FPR to a easy access spot on the firewall.

ETONE · Post by **ETONE** » Tue Jul 22, 2008 5:58 pm

does it blow black smoke when its running shit?
Cheers
Campbell

TBON12 · Post by **TBON12** » Tue Jul 22, 2008 6:27 pm

None that I know of.

panagiwtis N13 · Post by **panagiwtis N13** » Tue Jul 22, 2008 8:04 pm

if you r running on standard ecu then perform a diagnostic procedure.just an idea m8.you never khow...

TBON12 · Post by **TBON12** » Tue Jul 22, 2008 10:28 pm

Found the problems!!!
Injectors were buggered, my spare set aren't in tip top shape but will run some injector cleaner on pay day.
I also have a boost leak from the outlet of my T25 3 bolt flange, it seems one of the threads is stripped - so a good old helicoil shall come to the rescue on pay day also.