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I have a 2001 F 350 with the 7.3 diesel. I went through an injector problem last year and found that they were replaced with Pensacola injectors, which I would not recommend. I went to Ford and got a complete set of injectors and it was fine for about a month then it was starting to clatter again and it scanned #3 injector interment. Ford warranted the injector and it was fine for about 2 weeks. Rescanned and it came up with the same results in the same cylinder which I don't think is likely. I am leaning toward a bad wire in the injector harness or worst case the injector control module. My question is, could a cam sensor cause that problem in only one cylinder? I know the sensor is old.
Mountain Pass
Joined: Jul 2019
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From: Northern California
Logistics Pro
Joined: Oct 2011
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From: Mcdonough, GA
Are you measuring fuel pressure. As recently posted by Bitterroot low fuel pressure can kill injectors.
Edit: The explanation is in this thread and post number 156
https://www.ford-trucks.com/forums/1...o-know-11.html
Edit: The explanation is in this thread and post number 156
https://www.ford-trucks.com/forums/1...o-know-11.html
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New User
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I can only measure the supply fuel pressure at the fuel bowl. That is running at 50psi, Ford spec says 45 to 60 psi's. I don't have any way to measure rail pressure and neither does the Ford dealer accordind to them.
Logistics Pro
Joined: Oct 2011
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From: Mcdonough, GA
So you have a fuel pressure gauge in the cab or did you just test it with a mechanical gauge at the bowl? It can read ok at idle but can drop under a load once you start driving.
Edit: Here's an example
Edit: Here's an example
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New User
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All I have is a mechanical gauge and testing it at the bowl. I am going to have to figure a way to hang the gauge where I can see it inside. Is there a gauge that will plug into the ecu and read it from inside?
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Hotshot
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From: Douglassville, PA
I have seen guys report that they use a long hose and tape the gauge to the windshield.
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It's a Van Gogh
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From: Elk Grove, CA
50 psi of fuel at idle is a good sign. Great to know if it falls off under load but so far so good.
It would be helpful to be able to monitor PIDs to see what your PCM sees. Forscan app on your android and OBD2 adapter will get ya there for reasonable cost. That's a fave but research before you buy, lots out there.
It would be helpful to be able to monitor PIDs to see what your PCM sees. Forscan app on your android and OBD2 adapter will get ya there for reasonable cost. That's a fave but research before you buy, lots out there.
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