Early 99 not running.
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Logistics Pro
Joined: Jul 2001
Posts: 4,137
Likes: 41
From: Marble Falls, Texas
Early 99 not running.
Guys a friend of mine bought a few trucks at a police auction. All need work, but the one that wouldn't run is an early 99. It would actually run, but when it does it misses horribly and (white smokes) bad.
So far I have:
Pulled the vc's and checked the UVC's, all good
Ohmed out the injector solinoids, all 3.2ohms
Buzz checked all sounded good except #8 was quiet. (Maybe long lead?)
Changed IDM's, no change.
Oil in HPOP res is good, but taking the oil cap off, I noticed the oil was...stringy. Maybe someone added something to the oil?
Drained the fuel bowl, and inspected, good filter, bowl is okay.
I currently have the entire harness off the truck. I'm gonna unwrap it and check the wiring out and ohm it out as well. I hope that's my problem.
If not, I'm gonna do a compression check....what psi should I see?
I want to check the IPR orings.
After that, I was gonna pull injectors and see what I find.
Also, the truck has CRAZY blow by.
Anyway, that's where I'm at so far. If yall see something I'm missing, any help is always appreciated.
So far I have:
Pulled the vc's and checked the UVC's, all good
Ohmed out the injector solinoids, all 3.2ohms
Buzz checked all sounded good except #8 was quiet. (Maybe long lead?)
Changed IDM's, no change.
Oil in HPOP res is good, but taking the oil cap off, I noticed the oil was...stringy. Maybe someone added something to the oil?
Drained the fuel bowl, and inspected, good filter, bowl is okay.
I currently have the entire harness off the truck. I'm gonna unwrap it and check the wiring out and ohm it out as well. I hope that's my problem.
If not, I'm gonna do a compression check....what psi should I see?
I want to check the IPR orings.
After that, I was gonna pull injectors and see what I find.
Also, the truck has CRAZY blow by.
Anyway, that's where I'm at so far. If yall see something I'm missing, any help is always appreciated.
Post Fiend
Joined: Sep 2006
Posts: 5,584
Likes: 0
From: Millbrook Alabama
Guys a friend of mine bought a few trucks at a police auction. All need work, but the one that wouldn't run is an early 99. It would actually run, but when it does it misses horribly and (white smokes) bad.
So far I have:
Pulled the vc's and checked the UVC's, all good
Ohmed out the injector solinoids, all 3.2ohms
Buzz checked all sounded good except #8 was quiet. (Maybe long lead?)
Changed IDM's, no change.
Oil in HPOP res is good, but taking the oil cap off, I noticed the oil was...stringy. Maybe someone added something to the oil?
Drained the fuel bowl, and inspected, good filter, bowl is okay.
I currently have the entire harness off the truck. I'm gonna unwrap it and check the wiring out and ohm it out as well. I hope that's my problem.
If not, I'm gonna do a compression check....what psi should I see?
I want to check the IPR orings.
After that, I was gonna pull injectors and see what I find.
Also, the truck has CRAZY blow by.
Anyway, that's where I'm at so far. If yall see something I'm missing, any help is always appreciated.
So far I have:
Pulled the vc's and checked the UVC's, all good
Ohmed out the injector solinoids, all 3.2ohms
Buzz checked all sounded good except #8 was quiet. (Maybe long lead?)
Changed IDM's, no change.
Oil in HPOP res is good, but taking the oil cap off, I noticed the oil was...stringy. Maybe someone added something to the oil?
Drained the fuel bowl, and inspected, good filter, bowl is okay.
I currently have the entire harness off the truck. I'm gonna unwrap it and check the wiring out and ohm it out as well. I hope that's my problem.
If not, I'm gonna do a compression check....what psi should I see?
I want to check the IPR orings.
After that, I was gonna pull injectors and see what I find.
Also, the truck has CRAZY blow by.
Anyway, that's where I'm at so far. If yall see something I'm missing, any help is always appreciated.
Ummm, me thinks this ones blown.....
be right back with some references.....well crap, search is not my friend tonight. but earlier in the week a member posted back with pics of blown engine, that had very similar symptoms.
Run a compression check first before you pull the main harness. compression should be around 400, maybe a little lower, but all should be within 10 PSI of each other. below 360 is not good.
Thread Starter
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Logistics Pro
Joined: Jul 2001
Posts: 4,137
Likes: 41
From: Marble Falls, Texas
Well, believe it or not, the truck only shows to have 120k on it. But when I scanned it with my scan gauge, it gave a vss code. That tells me maybe someone had it unplugged maybe.
But I will definately do a compression check next. I just scored a new Snap On diesel compression tool off craigslist for $100.
But I will definately do a compression check next. I just scored a new Snap On diesel compression tool off craigslist for $100.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Crazy blowby as in puf puf puf, or just lots of smoke? Stringy oil doesn't sound good either. My truck will smoke different amounts out of the cap depending on which oil I'm running, so if compression checks out, get the oil changed. I'd also suck what you can out of the HPOP reservoir to get as much clean oil in there as possible.
It does kind of sound like you've got a bad cylinder and they dropped some of that miracle in a jar stuff in the oil to fix the problem. When you pulled the valve covers to check the UVCH, did you start the truck to watch for oil discharge from the injectors?
I didn't think they put the LL injectors in the #8 until late 99? Either way the LL sounds the same in my truck as the other 7 do.
It does kind of sound like you've got a bad cylinder and they dropped some of that miracle in a jar stuff in the oil to fix the problem. When you pulled the valve covers to check the UVCH, did you start the truck to watch for oil discharge from the injectors?
I didn't think they put the LL injectors in the #8 until late 99? Either way the LL sounds the same in my truck as the other 7 do.
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Posting Guru
Joined: Jul 2004
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From: Buckingham, IA
What Brandon said. With a miss; no fire, white smoke; unburned fuel, and excessive blow-by; leaking compression, I would guess that you have a burned piston or broken rings, probably from being run too hot. But maybe I'm looking for the worst case scenario. Since it came from a police auction, hard telling how it was driven.
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Thread Starter
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Logistics Pro
Joined: Jul 2001
Posts: 4,137
Likes: 41
From: Marble Falls, Texas
Chris, the blowby is constant and has "gusto". Austin (my79f) and I were looking at it when I took the harness off, and we both agreed that oil change + draining the rails and res was in order. I couldn't get it to run long enough to look at the injectors spit oil with the vc's off, so I was unable to watch that. But I am hopefull that since there isn't a LL injector on this truck, and even if there was it should sound the same. Like I said, during the buzz check, the sound was clearly different. So I'm hoping I find something in the harness. But even if I do, I will continue with everything else.
Mark and Chase, I'm not disagreeing with Brandon either. I think this thing may have a hole in a cylinder. But since my friend is paying me to work on this thing while my welding job is slow, I want to try everything I can for him. Not to mention, I'm learning a few things about the SD while I'm at it. More importantly, I'm learning about the dreaded early 99.
Also, just so I don't get it wrong, the cylinders go side to side correct? Drivers side front is cylinder 1, pass side front is cylinder 2, then criss cross back and fourth to the pass rear being #8. Is that correct?
Mark and Chase, I'm not disagreeing with Brandon either. I think this thing may have a hole in a cylinder. But since my friend is paying me to work on this thing while my welding job is slow, I want to try everything I can for him. Not to mention, I'm learning a few things about the SD while I'm at it. More importantly, I'm learning about the dreaded early 99.
Also, just so I don't get it wrong, the cylinders go side to side correct? Drivers side front is cylinder 1, pass side front is cylinder 2, then criss cross back and fourth to the pass rear being #8. Is that correct?
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
The presence of a LL injector brings up an interesting question. Does the truck have AD injectors on it? If it's running the split shot injectors, has the PCM been upgraded to run the newer injectors?
Hotshot
Joined: Jan 2008
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From: Rochdale MA
Thread Starter
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Logistics Pro
Joined: Jul 2001
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From: Marble Falls, Texas
Chris, the injectors are AB. The history is this, it was a landscape truck that most likely had "Foreign Exchange students" driving it. And it was seized by local sheriffs along with all their other trucks. I'm not thinking anything was EVER done to the truck. Heck, to tell you the level of service this truck had, when I pulled the vc's, they had grey rtv on both sides of the gaskets. That was the first thing to tell me, whoever was working on this before, had no idea what they were doing.
Jim, that will surely be helpfull.
Jim, that will surely be helpfull.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
I'd save a sample of the oil when you do the change in case you need to send it in for analysis. I'm not saying you don't have a dead hole or worn rings but there's also something else that's keeping the truck from idling (poorly) for more than a few seconds.
With your description of the oil, I'm kind of surprised only one injector buzzed weak. When you swap the oil, I'd get as much oil out of the top end as I could. (rails & HPOP reservoir)
Have you monitored ICP pressure and IPR duty % with the scanner? Maybe the IPR is sticking open or leaking past the o-rings.
Just throwing stuff out there until we hear back on the compression test. I was expecting you to tell us there was a strong puff puff puff
With your description of the oil, I'm kind of surprised only one injector buzzed weak. When you swap the oil, I'd get as much oil out of the top end as I could. (rails & HPOP reservoir)
Have you monitored ICP pressure and IPR duty % with the scanner? Maybe the IPR is sticking open or leaking past the o-rings.
Just throwing stuff out there until we hear back on the compression test. I was expecting you to tell us there was a strong puff puff puff
Thread Starter
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Logistics Pro
Joined: Jul 2001
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From: Marble Falls, Texas
I used my Terminator scan gauge on it and, that was one thing I did check. Everything looked to be normal when it was running as far as the psi and duty cycle. It will be at least thursday or friday till I get back to it. I've got to solve my dipstick nut oil leak on the pan of my truck first. Hopefully I can get the oring for it from ford in the morning.