89 gmc 2.5l
Put a new injector in my 89 gmc 2.5 liter
and its like the injector is stuck open and
dumps way to much fuel when I turn the
fuel pump on. What's causing it
The only thing that would cause dumping of fuel would be a bad fuel injector,or incorrect timeing.
Check fuel pressure, the fuel pressure regulator might be bad and creating excessive pressure
AAHH the infamous grounded injector driver in the 2.5 engines, I can't remember just how many of these I fixed in my years but every one except the one that burned itself up had a shorted injector driver in the ECM. replaced the ECM and they start and run as they always did.
Looking for a Used Sierra in your area?
CarGurus has 26 nationwide Sierra listings and the tools to find you a great deal.
Search GMC Sierra Questions
GMC Sierra Experts
Related Models For Sale