Please help engine trouble - Ford Powerstroke Diesel Forum
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post #1 of 9 Old 12-08-2010, 04:08 AM Thread Starter
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Please help engine trouble

6.9 idi idles fine and all but try to drive it runs like absolute crap. Any ideas? Think the injection pump needs adjustment or is it maybe it tossed a piston or two.

1992 3000GT VR4
1995 Ram 2500 cummins
1996 Ram 3500 cummins
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post #2 of 9 Old 12-08-2010, 07:48 AM
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If its tossed a piston or two, it would hardly idle.

My bet is a fuel issue like you said. First thing, replace the fuel filter. Its a maintaince item anyways so might as well do it.

If that doesnt do anything, we can go from there.

Does it smoke under throttle? White, blue, grey, black?

-Justin-
1985 Ford F-250 with a 6.9 IDI/T-19 4speed 4x4
Paint, Eagle Alloys, Kelly Safari TSR's, ATS turbo, gauges

2004 Jetta TDI 5 speed
2004 2wd Excursion Limited 6.0. Testing how loyal I am to Ford
1997 Passat B4V TDI. 1 of 80 imported in 97. 50 MPG and a factory 25 gallon fuel tank!
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post #3 of 9 Old 12-08-2010, 09:07 AM Thread Starter
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I'm looking at buying the truck, forgot to mention it. Looking at how the kid wrote his posting I'm betting it's a bad fuel filter and old as hell fuel. Maybe even gelled these past few days in the NE. Anything I should really look for engine trans wise? It's an 86 f250 ext cab

1992 3000GT VR4
1995 Ram 2500 cummins
1996 Ram 3500 cummins
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post #4 of 9 Old 12-08-2010, 09:30 AM
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Just your standard truck lookover. Check the coolant, for oil, or coolant in your oil. 6.9's have fairly weak head gaskets factory, so they do blow out from time to time. Head gaskets plus head studs (ARP) are a good upgrade.

As far at the tranny, smell the fluid, see if it smells burnt.

-Justin-
1985 Ford F-250 with a 6.9 IDI/T-19 4speed 4x4
Paint, Eagle Alloys, Kelly Safari TSR's, ATS turbo, gauges

2004 Jetta TDI 5 speed
2004 2wd Excursion Limited 6.0. Testing how loyal I am to Ford
1997 Passat B4V TDI. 1 of 80 imported in 97. 50 MPG and a factory 25 gallon fuel tank!
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post #5 of 9 Old 12-08-2010, 10:42 AM Thread Starter
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Ok. Do the 6.9s smoke much when they are cold. It's currently 20s with some pretty heavy wind. Smoked white from one of the stacks. Idk how he has them run but if it's strickly right bank could it just be it's cold unburnt fuel or coolant

1992 3000GT VR4
1995 Ram 2500 cummins
1996 Ram 3500 cummins
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post #6 of 9 Old 12-08-2010, 11:24 AM
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Was that on a cold start? If so, then that could be normal. How much and how long?

-Justin-
1985 Ford F-250 with a 6.9 IDI/T-19 4speed 4x4
Paint, Eagle Alloys, Kelly Safari TSR's, ATS turbo, gauges

2004 Jetta TDI 5 speed
2004 2wd Excursion Limited 6.0. Testing how loyal I am to Ford
1997 Passat B4V TDI. 1 of 80 imported in 97. 50 MPG and a factory 25 gallon fuel tank!
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post #7 of 9 Old 12-10-2010, 07:13 AM Thread Starter
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How many fuel filters do I have on a 6.9. I sourced a Donaldson spin on from work but hear that there is another one. Donaldson doesn't list it referenced to ford but it is when you reference the 6.9 diesel. Part numbers would be even better if possible

1992 3000GT VR4
1995 Ram 2500 cummins
1996 Ram 3500 cummins
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post #8 of 9 Old 12-10-2010, 09:10 AM Thread Starter
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Also. Is there an extra 2 or 3 inches in length for the spin on filter? Donaldson has a spin on with water drain that's about 9 inches tall. Has a 10 micron rating over the factory rated 20 micron. I would look mysel but the truck isn't in front of me at work

1992 3000GT VR4
1995 Ram 2500 cummins
1996 Ram 3500 cummins
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post #9 of 9 Old 12-16-2010, 07:52 AM
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6.9's have one fuel filter, as do 7.3 IDI's.

As far as that 9" tall one, its to large, and wont work I'm pretty sure.

-Justin-
1985 Ford F-250 with a 6.9 IDI/T-19 4speed 4x4
Paint, Eagle Alloys, Kelly Safari TSR's, ATS turbo, gauges

2004 Jetta TDI 5 speed
2004 2wd Excursion Limited 6.0. Testing how loyal I am to Ford
1997 Passat B4V TDI. 1 of 80 imported in 97. 50 MPG and a factory 25 gallon fuel tank!
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