I don't think I've ever heard of one of those loosening up. I'm sure glad it turned out to be something so simple, though.

 

I've heard of it and I've checked for it, but it hasn't happened to me yet. Did you use Loc-Tite on the screw?

Copying from a post I just finished - The tools that make setting torque easy:

1. Inch-pound torque wrench (240 in/lb. max limit is ideal).
1A. 3/8" to 1/4" drive adaptor if the torque wrench is 3/8" drive.
2. About a 6"-long and a 12"-long 1/4" drive extension.
3. 1/4" universal joint.
4. 1/4" drive by 8mm deep socket.

Book says 120 in/lbs on the injector hold-down bolt, and I read a magazine article where they suggest 140 in/lbs - but I do 130 in/lbs...

 

Rich, I was referring to the torque for the solenoids and the poppet screw but I like the idea of alittle more torque on the hold downs. I found some info last night that said 13 in/lbs for the poppet screw and that it takes a 4.5mm torx socket. Found a couple sources for the socket and will try to procure one, won't use it much but I am a tool nut and have to have it.

No I didn't use any loctitite because I was not sure that was going to be my problem and I didn't want to make things worse for myself if it was not the issue. But I have boxes of Clay goodies that have been waiting years to go on so the plan is to tear into the truck in July for new uppies (bellowed), turbo rebuild, new boots, plenum inserts, exhaust manifold bolts, FRX, HPX and special cleaning and polishing. I will pull the cover and just re-check everything I can.

As a former full time mechanic I have all those tools you listed and too many more (according to the wife) but after what I found out last night another tool I NEED to get is an in/lb screwdriver torque wrench, just because it might make things easier but if not just another cool tool.

Drove the truck to work last night for a shake down run and it died after backing about 5' in the driveway, restarted and drove fine the 21 miles to work. This morning on my way home I had to slow for a guy exiting the highway and shortly after accelerating away it hiccuped and then ran like crap. No CEL, eventually pulled over and grabbed the hand held scanner from the back seat and pulled three codes, O0344, P1211, and P1316. I am familiar with all of them, so I wrote them down and reset the PCM. As soon as the codes cleared the truck ran fine again. So now I need to figure out the AE for doing the CPS perdel test and put in one of my other CPS'. Hope that fixes the hiccup.

Thanks for all the continued help.

 

CCT:

Cylinder Rotational Velocity 1 through 8 selected.
Engine Oil Temperature selected.
Set AE to record while you wait for the engine to reach above 140 degrees.
A/C off, foot on brake, in gear, idle only, start CCT test.

 

Thanks for the info, will run the test wed, tonight is my friday.