suspecting a bad injector - Ford Powerstroke Diesel Forum
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Old 12-16-2013, 07:16 PM
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suspecting a bad injector

Hey all,

96 7.3 has been running rough for a few weeks. Oil is new, coolant is new, fuel filter is new but seems to run rough on idle and over 60. Feels like its missing an injector, also feels like the engine is vibrating slightly. I thought it could be the CPS but I'm thinking the whole engine would be rough. There is still power and boost, just a little down. I ohmed the injectors though the harness and got 3.8 on 7 of them and 5.3 on one. I also put a temp laser probe on the headers and found that the 5.3ohm one was 50 degrees less than the others.

My question is am I on the right tracks?
Will the ohms be high if the injector is blocked or is the solenoid faulty?

I want to do an injector rebuild myself with just an o-seal kit, is this wise? what tools would I need? (any links?)

Any other help and advice is and always appreciated
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Old 12-16-2013, 07:44 PM
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I think that you are on the right Track, have you torn the valve cover off and inspected the wiring harness for that specific injector? any burnt pins on the vc gasket?
Short of Wiring, you can try some hot shots secret, or seafoam, etc. make sure you research them first though.
If you are talking about putting new o rings on your injectors, that does not sound like your problem, sounds like your injector is just not firing completely. Just do a search on here and you should find a few threads.
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