so i got a 2000 E39 528i, the code P1250 come on for the check engine light and the car runs a little rough, there is also a cyliner 1 miss fire , sometimes and check engine light goes off when the car warms up, sometimes it comes back on. thinking of doing a fuel pressure test to see what the PSI is reading, if it reads between 50 and 60 psi then im thibking the fule pressure regulator, and the fuel pump are both ok. Then i would move to the fuel injectors to see if there are any bad ones.
Can anybody confirm my work as far as diagnosing the issue???
Can anybody confirm my work as far as diagnosing the issue???
