Hey guys, i have an RB20DET onevia, and ever since i upgraded to a bosch 910 fuel pump i've had issues starting it.
Basically, it turns over fine, and the fuel pump is hissing away, and you can feel fuel flowing through the lines into the fuel rail, but, it struggles to actually fire the engine to get it going. It was bearable at first, taking 2 or 3 tries but then starting ok, but its getting worse and worse, im now searching for a new starter motor cause the current one is almost worn out.
I've been spraying a little aerostart into the intake and then starting her and she kicks over fine, so the spark is obviously there...
Once running, i don't have any issues, the engine runs fine (except for it sometimes going into limp mode for a few secs when i take her over 5k, but the car is currently untuned so i think its just running off the map).
Anyway, what do you reckon it could be? i would say fuel pump but once running it delivers fuel fine, wtf?