Still chasing the miss....
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From: Northern KY
Still chasing the miss....
YEP still trying to figure out a miss on my 05 F350, I bought back in August and you all helped me imensely, so I figure I would throw the latest info at you. I ran an oil change with T6 and archoil to no avail and about 500 miles ago did the oil change with T6 and 2qts of Hot shot. No change. Today a friend of mine brought in his AE and we hooked her up...i was hopeful when I saw the P0272 #4 injector contribution code, but it only showed up once. We did the buzz test and contribution test with nothing out of whack. So we went for a ride to monitor everything when she started bucking....AE picked up no missfires but she is definately missing. It is absolutely evident even at idle...partialy magnified by the 4 inch turbo back diamon eye... any thoughts.
I cant post numbers from SG2 just now but I didnt see any issues with FICM, ICP EOT-FWT, etc,
I use Diesel Kleen on every fill up as well
I cant post numbers from SG2 just now but I didnt see any issues with FICM, ICP EOT-FWT, etc,
I use Diesel Kleen on every fill up as well
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Sounds like my buddy's truck. Finally got an Injector Contribution code for #5 but no codes.
Swapped with known good sensors; ICP, EBP, MAF. FICM volts and IPR % are perfect.
Next is a bubble test. The engine acts like it has stiction, but only has the sporadic idle surge with hot engine.
Swapped with known good sensors; ICP, EBP, MAF. FICM volts and IPR % are perfect.
Next is a bubble test. The engine acts like it has stiction, but only has the sporadic idle surge with hot engine.
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From: Northern KY
It's irritating as all get out, mine is pretty constant and magnified at oil changes and cold weather. I've concidered pulling #4 injector and polishing spool valve to see if it helps. Back in August when it started I was on here for a couple weeks trying to find the source, we all agreed that it was stiction. At this point I am ready to replace injectors if i could know for sure which one was acting up.
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Definately try polishing the spool. Actually do all 4 on the same cylinder head (driver's side)
That's my plan when the truck becomes available is to Bubble Test and then polish and re-ring all 4 injectors on the passenger bank.
Never heard of stiction at operating temps, I suppose there is always a first.
Josh
That's my plan when the truck becomes available is to Bubble Test and then polish and re-ring all 4 injectors on the passenger bank.
Never heard of stiction at operating temps, I suppose there is always a first.
Josh
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Joined: Oct 2003
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From: Jefferson, Iowa
Fwiw, I had a hot miss at idle on cylinder 5 with my 03 130k. I replaced my injectors after my dorman oil cooler gasket failure and it went away. I would just get a cont code nothing else. It was not that bad but it would hunt up and down about a 100 rpm. Upon acceleration after idles a couple of min it would push a little black smoke. A wrote it off as an injector. I would clean the spool valves, rering and swap with a different hole. See if the random code moves or goes away.
Sent from my leash using IB AutoGroup
Sent from my leash using IB AutoGroup
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From: Northern KY
No smoke at all, I didnt unhook ICP this go round..Mostly because under WOT the miss is gone. I'll give it another 500 miles, and let the weather warm up a bit and start pulling injectors on left bank. Wont hurt to disconnect ICP for a little run at lunch time. Turbo spools fine and builds great boost, although it does rest at idle at 85. and you deffinately hear it with new exhaust.
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Freshman User
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From: Northern KY
finally got it figured out....On a hunch and the one misfire code for #4 I went ahead and replaced the injector. found a stretched bolt on the HP oil rail as well. Problem fixed truck never ran better. I'm getting pretty good at tearing this thing down.
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