how to tell a bad fuel injector w/ valve covers off - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 06-17-2013, 06:47 PM Thread Starter Rookie
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how to tell a bad fuel injector w/ valve covers off

i'll be removing my valve covers soon to put new glow plugs in and some other stuff. While i'm in there, is there any way i can tell if i have a bad fuel injector?? thanks
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post #2 of 2 Old 06-17-2013, 07:56 PM
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You can run the engine with the covers off and check the oil flow out of the injector deflector spouts. They should all be about the same. If one has significantly less, that would indicate a bad injector although it could be a bad solenoid, a loose poppet screw, or something else. I guess you could also have a bad injector with good oil flow, but the above is the only way I know. Cheers!

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