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The hard and late shift sounds exactly like my truck when it had dry rotted vacuum lines. Check at the transmission, there's a small one there on the passenger side that tends to develop cracks. Mine blew in two altogether and nearly left me stranded. Rather than swap engines, if the only other...

45 degrees shouldn't be nearly cold enough to give starting trouble. I had a lot of trouble with cold starts last winter but it turned out it was being exacerbated by a failing injection pump letting air in the fuel system.

Does the hole there serve any purpose? I was thinking that if it doesn't, I could tap it and put a small, fine thread bolt in there with some teflon tape. Just don't want to do that and find out there's a reason it's supposed to be there. :/

The pump was fresh as of this summer. That injector line had some trouble and among other things the fitting for the injector line needed to be replaced. Maybe the new fitting is shorter and doesn't plug the hole? But then if that's the case, I don't understand why it would run that rough until...

No... this pump is less than 6 months old and with the money I have sunk into this truck I will scrap it before I go through that again. The fittings are a repair on one of the injector lines that was not so good.

First pic should give an idea of general location, second is a closer shot. As you can see, there is some water weld or the like, and it must have literally blasted it out. EDIT: Adding third photo from web for reference. It's one of the two holes I circled.

I'll see if I can get a photo right now, back in a flash!

I just had someone take my intake manifold off to repair a leaking injector line. Today I took the truck for its first real spin since the repair, and I had an immediate problem. I went to put it up to speed, and it suddenly lost power. I stepped on the gas and got clouds of smoke like I've...

Lucked out, it was nothing. Had it not been raining, I would have gone underneath right away and seen that the line to the vacuum modulator had blown off. Crisis averted, I suppose. :-D

Problem is between all shifts. It runs fine at lower speeds, reverse works fine too.

...Seriously? :cry:

I had the TH400 in my M1009 rebuilt last year, and just now seem to be having renewed troubles. My younger brother took it for a "spin" and later admitted that he tried to make the tires spin with some gas + brake in the rain. Now, whenever I try to get to speed, it revs waaaay higher than usual...

What about an exhaust stack to complete it? :-D

I'm hoping for "a lot".

I hated my K&N filter. Mod looks like a good, simple way to pull in lots of extra air, I might have to do one of these myself.

For the transmission problem, check the vacuum lines coming off the left side of the IP. Mine were both pretty rotted, and when I moved them in the process of changing the pump, one cracked pretty badly and the other tore right off. I took her out for a test drive, and no 2nd gear! Also check...

When I took mine out, I wasn't aware of the three bolts holding the little "wheel" in the front. I took off the injector lines and the three mounting bolts, and gave it a gentle tug. The shaft stayed on and the rest of the pump pulled off, I could have taken the pump without the shaft it the...

Just replaced mine last week, still tinkering and fine tuning. Man, do NOT bolt that manifold on before you test start it, mine has sprung a leak and I'm finding it awful hard to work up the motivation to take the manifold back off and fix it.

95% there... intake manifold is back on, just the little bells and whistles left but was too exhausted to do it today. 20 minutes tomorrow and with any luck my truck should roar back to life.

If it ain't broke, fix it till it is! :-D