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Looks like the glow plug wire going to #1 cylinder fried when I last tried to start my truck. Now the glow plug light isn't coming on. I've checked the fuse in the underhood fuse box, it's good... Where to check next? Why did the wire fry? Did the glow plug short out? If I disconnect that...

10463940 Is an alternator and not a Fuel filter manager the correct number is 10226035

I worked at a wrecking yard outside Ottawa and I can pretty much assure you that they will not take to time to inventory injectors. You'd probably have to buy a complete head at least or what ever the injectors are sitting in. Secondly, if the engines they came on are good engines, they won't...

So I take it I can use that line to hook up a fuel pressure gauge?

Ok so that explains why they just blocked it... T-valve was probably leaking and they did away with it.

Ok, so it comes from the FFM towards the front of the engine to a T-valve, then goes to where? Is the hose on the other side of the T-valve just a drain?

Thanks Tim!

The hose that is there looks like the one going to the FFM. Where does the other part of it go? On that pic that you posted, it goes to the right of the engine.

Ok, could they have by-passed it? Where the T-valve should be, there's a hose that is blocked with a bolt and a clamp.

I think I may have seen a hose that's connected to it. When I got the truck I thought: "What the hell did they by-pass here?!!" LOL

Oh ok, my apologies to Leo (NVM) for thinking he was referring to the cooling system. I didn't realize it was at the front of the engine. Thanks!!

Sorry, I meant in the fuel system

Where do I have to look to see it? Do I have to get under the truck?

Cool, I have some at home :)

What's good for the PMD to heat sink? Will the thermal paste used on CPU's work?

Ok, guess my comment was taken the wrong way. Thanks to those who tried to help.

I called a guy I know, ran the scenario by him and read off the codes. He was a GM master tech before he opened his own shop. I've found him to be pretty good at diagnosing. He seems to think that water got into the optic sensor throwing the timing off. That said, the truck was parked for about...

Managed to get the truck started again, still doing the same thing, I let it run for a while then I revved it a bit until the SES light came on and it ran fine (but only with the SES light on)

I bled as much as I could by cycling the LP and then unscrewing the petcock at the top of the fuel filter. I don't have a gauge to hook up to see fuel pressure.

Ok, guys, please don't take this the wrong way but read carefully... The truck runs fine with the SES light ON. Runs like crap with it OFF, and now won't start. What does the SES light have to do with air in the lines??? Air in the lines will cause it to run like a bag of dirt with the SES light...