Changed Orings, still have stutter
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Tuned
Joined: Jun 2004
Posts: 275
Likes: 0
From: Alberta, Canada
Changed Orings, still have stutter
I changed my o-rings this weekend and it did improve some of the problems. Before when I'd rev up to 3k it would only get to 2500, then hesitate, then go on, and puke out a big cloud of blue smoke....it doesn't do that anymore.
But when I'm driving along, typically in low RPM (idling aroung a parking lot), when I push the clutch in, it stutters, whole truck shakes, rpm drop off abit for about 2-5 seconds...then corrects itself.
On the highway and all it seems fine, no issues.
What's next for me then, IPR? If it isn't leaking any oil, does that mean it's not as simple as IPR orings, and I should just replace it?
But when I'm driving along, typically in low RPM (idling aroung a parking lot), when I push the clutch in, it stutters, whole truck shakes, rpm drop off abit for about 2-5 seconds...then corrects itself.
On the highway and all it seems fine, no issues.
What's next for me then, IPR? If it isn't leaking any oil, does that mean it's not as simple as IPR orings, and I should just replace it?
Logistics Pro
Joined: Oct 2008
Posts: 4,818
Likes: 1
From: Avilla, IN
A sticking IPR would have different symptoms. You may need new o-rings though. The kit can be gotten from an IH dealer for cheap.
I see you only have 60k miles on that truck. How often do you run it? Or the previous owner?
I see you only have 60k miles on that truck. How often do you run it? Or the previous owner?
Logistics Pro
Joined: Oct 2008
Posts: 4,818
Likes: 1
From: Avilla, IN
Possibly a sensor like the ICP or the infamous CPS. You may want to try the new black one.
Honestly, it sounds like my truck. Except for instead of pushing in the clutch, it does it when I shift into P or N. I have checked my ICP, MAP & EOT with the "hillbilly" methods, lol. I have changed the IPR o-rings, CPS and all rubber fuel lines in the valley. I am basically left with one of two things. Bad injector o-ring(s) or bad injector(s) themselves. But I have 249,000 miles.
Honestly, it sounds like my truck. Except for instead of pushing in the clutch, it does it when I shift into P or N. I have checked my ICP, MAP & EOT with the "hillbilly" methods, lol. I have changed the IPR o-rings, CPS and all rubber fuel lines in the valley. I am basically left with one of two things. Bad injector o-ring(s) or bad injector(s) themselves. But I have 249,000 miles.
Thread Starter
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Tuned
Joined: Jun 2004
Posts: 275
Likes: 0
From: Alberta, Canada
Can the CPS cause erratic problems like this too? I had the CPS go on my 03, 7.3, but it just started randomly stalling, ran fine otherwise.
I unplugged the ICP sensor, and the stuttering got worse. Does that point to the IPR?
Also, fuel pressure is modded and at 70psi.
I unplugged the ICP sensor, and the stuttering got worse. Does that point to the IPR?
Also, fuel pressure is modded and at 70psi.
Thread Starter
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Tuned
Joined: Jun 2004
Posts: 275
Likes: 0
From: Alberta, Canada
Any other ideas besides the O-Ring on the IPR?
My HPOP cover plate check plug was partly cross-threaded by the previous owner, so I'm not going to pull it. I guess I'll have to try to collect the oil before it gets into the valley somehow.
If the injector rings are new, and I do the IPR rings, what's left? And fuel pressure is shimmed and is at 70psi. Was 55psi before shimming.
My HPOP cover plate check plug was partly cross-threaded by the previous owner, so I'm not going to pull it. I guess I'll have to try to collect the oil before it gets into the valley somehow.
If the injector rings are new, and I do the IPR rings, what's left? And fuel pressure is shimmed and is at 70psi. Was 55psi before shimming.
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Thread Starter
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Tuned
Joined: Jun 2004
Posts: 275
Likes: 0
From: Alberta, Canada
I replaced the gaskets and harnesses on both sides.
I guess I'll take the IPR out and do the Oring kit, I have one. I was debating if I should just replace it instead... Would orings cause this problem?
I guess I'll take the IPR out and do the Oring kit, I have one. I was debating if I should just replace it instead... Would orings cause this problem?
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