RepairPal is your advocate for car care advice and guidance

Q: What's causing my engine to run rich on 1992 Chevrolet Blazer

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
The check engine light is on - code 45 I replace the o2 and the catalytic converter. I've read that the fuel injector or fuel pressure regulator may need replacing, but the book says it should be done by a technician.. Can this be done by me?
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
I am assuming that your 1992 Chevrolet Blazer is a small Blazer with a V6 engine, not the full size version. If I am wrong please let me know. The fuel injector and pressure regulator are located under the upper intake plenum. The particular fuel injector includes the fuel pressure regulator. Replacing the injector is not a difficult job for an experienced technician. You will need to decide for yourself if you want to take on the job.
Oakman, The engine is 4.3L V6. It has a CPI. Will this make a difference in my being able to replace the fuel injector or fuel pressure regulator? I guess that is why the repair book said to take it to a professional. The vehicle is old, but we need to keep it running. I'd rather not put any investment in professional repairs especially with the age of the vehicle.
Find Out Why Your Check Engine Light Is On
Didn't find what you were looking for?