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Old 11-10-2012, 06:09 AM
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04, f250 miss and low power

Im new to the site and glad to be here. I also posted this in the introduction after being asked what problems. Thanks. My truck is a 2004 f250. the truck was running fine then it Started missing and knocking like it had a bad injector
Scanned it and found injector codes. No ficm code. Did a cutout on all injectors and couldn't communicate with 2,4,6 and 8 so I thought it was the wiring harness.
Checked harness, checked ficm voltage, cleared codes and still came back with number four
Low voltage. Pulled 2,4,6 and 8 injectors checked all prongs, I-rings and seals
(Replaced number four) put everything back together and started truck
Still had a bad miss and no power.
Done a Relative compression test and cylinders four and five were low. Pulled the new #4 injector back out and pulled number five out. When I pulled the stand pipe from the right side it had a little rust on it.(looked like rust) when I pulled number 5 injector it looked like it had rust bout mid way of the injector.
For some history on this truck. I've had to change the egr valve, egr cooler, oil cooler and coolant reservoir.
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Old 11-10-2012, 09:26 AM
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Quote:
Originally Posted by Bustedshoulder View Post
Im new to the site and glad to be here. I also posted this in the introduction after being asked what problems. Thanks. My truck is a 2004 f250. the truck was running fine then it Started missing and knocking like it had a bad injector
Scanned it and found injector codes. No ficm code. Did a cutout on all injectors and couldn't communicate with 2,4,6 and 8 so I thought it was the wiring harness.
Checked harness, checked ficm voltage, cleared codes and still came back with number four
Low voltage. Pulled 2,4,6 and 8 injectors checked all prongs, I-rings and seals
(Replaced number four) put everything back together and started truck
Still had a bad miss and no power.
Done a Relative compression test and cylinders four and five were low. Pulled the new #4 injector back out and pulled number five out. When I pulled the stand pipe from the right side it had a little rust on it.(looked like rust) when I pulled number 5 injector it looked like it had rust bout mid way of the injector.
For some history on this truck. I've had to change the egr valve, egr cooler, oil cooler and coolant reservoir.
Have you been losing coolant? Have you checked ficm koeo, koec, running and load tested batteries. You may want to pull the upper fuel filter, hfcm fuse and ficm relay then crank it over and check for combustion gasses in the housing. What is icp and ipr readings?

Sent from my phone that somebody didn't help me get.
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Old 11-10-2012, 10:04 AM
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I did check the voltage at the ficm koeo didn't check koec or running.
I load tested batteries. Has new fuel filters and not losing coolant.
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