5.7L:
I replaced the fuel pressure regulator diaphram, fuel filter and spark plugs. The engine will start fine with check engine light being lit. Once warming up, typically about 3 minutes of running, check engine light goes off, engine starts running rough, black smoke is emitted from the exhaust. I press on the accelerator while in park, engine sputters and jerks then dies. Very hard to start, cranks excessively, if starts runs really rough with black smoke!
I replaced the fuel pressure regulator diaphram, fuel filter and spark plugs. The engine will start fine with check engine light being lit. Once warming up, typically about 3 minutes of running, check engine light goes off, engine starts running rough, black smoke is emitted from the exhaust. I press on the accelerator while in park, engine sputters and jerks then dies. Very hard to start, cranks excessively, if starts runs really rough with black smoke!
Feb 4, 2010 at 10:04 PM