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post #1 of 3 Old 08-26-2010, 06:06 AM Thread Starter
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Injector question

While I was under the valve cover today I was just checking stuff and on every injector, minus the one on my low compression cylinder, when I would unplug the injector it would make the truck run rough. But on the low compression cylinder injector(number 4) I would unplug the injector and nothing changed........ It buzzs out on the buzz test but not the contribution test. Just to remind you that these are fresh rebuilts and where tested (jim rosewood's) Just thought it was weird that the truck didn't stumble when I unplugged the injector like the others.


2000 f250 crew cab 4x4 6sp manual, Jim Rosewood 238/100 hybrids, gtp 38r, srp1.1 hpop, DP-Tuner! Driven diesel fuel sys!
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post #2 of 3 Old 08-26-2010, 05:54 PM
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what is the compression on the low cylinder if its real low unplugging the injector may not make it do anything at all, and I would take the injector out and get it tested it may be bad and I know you said it was tested but a second opionion may not be a bad idea


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post #3 of 3 Old 08-26-2010, 08:19 PM Thread Starter
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compression on the low cylinder was 290-295. The injector passes buzz test but not the contribution test, so.....

2000 f250 crew cab 4x4 6sp manual, Jim Rosewood 238/100 hybrids, gtp 38r, srp1.1 hpop, DP-Tuner! Driven diesel fuel sys!
269,xxx and counting!!

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