runs rough, no check engine light, had tune up, changed fuel & air filter
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2003 Ford F-150 Question: If a fuel pump is going out will the check engine light come on?
Answer #1AutoNation Ford Fort Worth (21 Answers) , Fort Worth, TX - (817) 200-4212Bankston Ford Mazda Ft Worth September 19, 2011, 04:51Enthusiast
Possibly not. However, a fuel pressure test is the best way to determine fuel pump performance. Sometimes the pump will work enough to keep the vehicle running. Test it at cold and normal temps although they are more common to fail at normal to warm temps.
ReplyTexasben, September 21, 2011, 16:44Rookie
Thank for replying, turns out I had a dirty injector.