very rough idle - Ford Powerstroke Diesel Forum
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Old 01-05-2008, 11:48 AM
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very rough idle

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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Old 01-05-2008, 02:39 PM
The Screwy HEUI
 

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Sounds like an ailing injector pump. Try testing out your injector pump and see what you get. Another possibility is it could be air bound. The chances for this are slight if it doesn't die after start up, but it's also another area you could look at.
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Old 01-05-2008, 03:11 PM
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auto enginuity from itp is the best scan software you can get and id let her run for a while it can take a good bit of time to get air out and and it s been down for some time the k.a.m is going to be blank it basicly will need to learn how to run again as well
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Old 01-05-2008, 03:27 PM
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when stuff sits around thats worse on them than actually running!!!
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Old 01-06-2008, 10:08 AM
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Quote:
Originally Posted by heavymetalf-250 View Post
Sounds like an ailing injector pump. Try testing out your injector pump and see what you get. Another possibility is it could be air bound. The chances for this are slight if it doesn't die after start up, but it's also another area you could look at.
how would i test the pump
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Old 01-06-2008, 10:12 AM
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Quote:
Originally Posted by todd View Post
auto enginuity from itp is the best scan software you can get and id let her run for a while it can take a good bit of time to get air out and and it s been down for some time the k.a.m is going to be blank it basicly will need to learn how to run again as well
how long should i let it "learn" how to run again.
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Old 01-06-2008, 05:54 PM
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the kam relearns as you drive im not sure about just sitting an idleing but definatly let her run for awhile it may come around and clear up on its own 2 years is a lot of sitting asfar as testing the pump i beleive auto enginuity will read pump pressure or you can buy a guage but the gauge will probally cost as much as the scan software so id go with the ae
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