Buick Repair Questions? Ask a Mechanic for Answers ASAP
Hi, I'm Ron and I can help you. We need to check the fuel pressure with a gage, check engine compression for a possible jumped timing chain and check for a bad fuel pressure regulator or leaking fuel injectors in case it's running too rich. If the plugs are black and sooty, it's too rich. Keep me posted, and I can still assist you ater you have rated me too.