very rough idle - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 6 (permalink) Old 01-06-2008, 07:19 PM Thread Starter
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very rough idle

this is what my father posted on another forum....any help is appreciated


Quote:
Bought a wrecked 99 two years ago and put on a new cab. so truck hasn't ran in two years. I started it up and it ran great for 10 sec then started idling like it was running out of fuel. Fuel pump is working and put in a new filter. old filter didn't look bad.

I am wondering if the lines to the injectors gummed up? Is it safe to blow them out with compressed air or should I pull the covers and the injectors and have the injectors cleaned and tested?
Also what is the best scan tool for these trucks?

I am not familiar with powerstrokes but do own two vw tdi's and a 93 ford non turbo f350 that's ran 50k on veg and bio.


Thanks for any help
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post #2 of 6 (permalink) Old 01-06-2008, 07:53 PM
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I would start with a new fuel filter, drain the water sep., and clean out the fuel pressure regulator. For something that has sat for that long, the fuel might have algea in it. Treat it with biocide.
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post #3 of 6 (permalink) Old 01-06-2008, 10:33 PM Thread Starter
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Quote:
Originally Posted by mattymx
I would start with a new fuel filter, drain the water sep., and clean out the fuel pressure regulator. For something that has sat for that long, the fuel might have algea in it. Treat it with biocide.
good idea.we have already changed the fuel filter. next up is the biocide
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post #4 of 6 (permalink) Old 01-07-2008, 12:10 AM
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How did the filter look? It could be that the regulator is gummed up.
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post #5 of 6 (permalink) Old 01-07-2008, 12:51 AM Thread Starter
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just finished cleaning that too. gonna plug it in ... see how it works then
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post #6 of 6 (permalink) Old 01-07-2008, 04:37 AM
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Cool. Good luck.
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