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I just off-road it so as long as it sounds good and moves the damn tires in 4-low I am happy. Just need it to be reliable. I'll get a P400 if I come up with the cash b4 they are gone.

Got the timing rotated correctly and it runs fantastic now. I still want to buy a P400 engine lol.

I might cuss once in awhile that is my most frequent sin hah. Twisted steel just come over to my place and fix this for me my job takes way too much time lol The best part about this is I have owned the truck for 8 years, I've done this adjustment before with success the problem is so much...

No just assume I am a functioning retard.

Charlotte NC is not that far lol. I re-read the service manual and I think the problem is just that I am an idiot. The TDCO shows 2.46 so who knows how advanced it really is, I thought I was supposed to go toward the passenger side but that is advancing it more per the service manual. I was...

Good advice lol. If I need an engine I'm just gonna buy a p400 and be done with this nonsense until the frame breaks in half.

Ok so if it is 3 wires that is 5v feed, signal, and ground right? I'll check my fuses but yes grounds are perfect, I even added about 5 extra grounds to a grounding strip and tied them all together. Brand new battery terminals batteries etc the PCM/ECM connectors are in great shape but I'll...

If you read up I already said, AC Delco, and it isnt doing any better than the other brand that is in there. How do I test the ckp circuit/PCM/hook up the oscilloscope I assume just signal wire and ground. The Hummer service manual sucks.

I have an oscilloscope, I'm starting to wonder if my tone ring is messed up or if the cam is really off a tooth. I did change out the crank pulley and harmonic balancer could I have damaged the crank sensor tone ring?

No, not anymore unless I unplug something. Below is a clip of it running cold start without the CKP plugged in. If I unplug the OPS it will not run, crank crank crank almost hit and then nothing. But with the CKP unplugged it takes a while cranking but it will fire up and run not much smoke...

So what is the point of unplugging it? Doesn't that only prove that the CKP is either working or not? I have a diesel compression tester otw. What should I see cold dry? I can do the wiring testing from the service manual and let you know. I also have a new PCM otw.

Which connector is the OPS? Top middle on the IP right 6 pin? And no I dont have a diesel compression tester. But I can get one. This is a brand new stanadyne pump benchtested prior to being sent to me from Leroy I seriously doubt the OPS is bad. I am going to buy a spare PCM for the...

Just to be sure, which connector is that, the 6 pin one top middle of the IP right?

Soooooo I spoke to soon it would appear, here is the sequence of events. Replaced the IP with a new stanadyne unit from Leroy that was benchtested prior to being sent to me. Used the PMD that came with it just hooked it up to a new extension harness. All wiring hooked up good, no air bubbles...

Yeah so lesson learned there, if you're putting in something hard to put in only go New if at all possible. Like an alternator I could care less if it is reman. As far as diesel care that happens tomorrow, I'll let you know what they say. If they won't take it I guess I'll just sell it as a...

Well that fixed it, new stanadyne pump and it runs better than ever.

I just need the IP to run long enough to crack the block damnit! Or throw a rod or blow a HG something worth junking this D code thin block lol. The H1 radiator setup is particularly hard on these engines and mine has 170k just won't die, the block is so thin it sounds like a 50's tractor...

There is no way it is the head gasket this started with a P0216 code pump not following desired timing and got worse when I messed with the TDCO until we got to this point. Doesn't smell like burning coolant at all. I'm trying to keep it stock I already bought a DS4 pump from Leroy.

If it turns out to be the IP I'm going to physically drive this over to Memphis and give diesel care the option of refunding me or me throwing it through their window.

Update: swapped out the ckp sensor for an AC Delco unit, they do look very different. The am general one had no visible metal pickups at the end but the AC Delco one does. Sadly it didn't change a damn thing, the truck runs so terrible now like it is hitting on maybe 5 cylinders if I'm lucky...