My car has recently began to get HORRIBLE gas mileage, there's some black smoke coming out of the exhaust pipe, it idles really rough and sometimes dies when idle. My service engine soon light is on, but no scanner will read any codes. I've replaced and/or cleaned the primary o2 sensor, the EGR valve, the idle air control, new spark plugs & wires, recent oil change, and new fuel pressure regulator. I am at a complete and total loss as to what I should do next. I was thinking maybe fuel injectors? But I don't even know how to test them.
Thanks in advance for your help!
have the same problem?
Tuesday, October 19th, 2010 AT 10:10 PM