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post #1 of 8 Old 05-05-2012, 10:37 AM Thread Starter
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injector?

How will I know if I have a bad injector? 01 f-250 4wd ec at. 137,000 miles
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post #2 of 8 Old 05-05-2012, 01:39 PM
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usually it'll run like crap when cold. sometimes, it'll just run like crap all the time. depends. of course, that's not to say another culprit isn't possible
what type of symptoms does it have?
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post #3 of 8 Old 05-05-2012, 01:49 PM Thread Starter
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It has plenty of low end power. Loses power at higher rpm levels. Have noticed more black smoke than before when I step on it. Also, fuel mileage is only around 9.5 in town. I don't expect great in town, but that's getting pretty expensive.
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post #4 of 8 Old 05-05-2012, 02:23 PM
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You'll have to run a buzz test and cylinder contribution test to figure out bad injector or not. And half the time you get ghost codes from a CPS issue known to 7.3.
Black smoke means not enough air. Check all your exhaust connections preturbo and intercooler boots.



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
330,000 + miles
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post #5 of 8 Old 05-05-2012, 02:41 PM Thread Starter
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Will do. Plan on installing a 6637 in the next couple of days also. Should take care of not enough air problem
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post #6 of 8 Old 05-05-2012, 03:05 PM
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No, that won't.



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
330,000 + miles
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post #7 of 8 Old 05-05-2012, 03:16 PM
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silly question, but have you removed and checked the air filter? could be as simple as that
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post #8 of 8 Old 05-06-2012, 04:48 AM Thread Starter
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Yeah, air filter is only a couple of months old. Its still real clean.
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