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Fuel returns good. Didnt try an additive but the weather is warm now so I won't be able to test till next year.

I tested all glow plugs and gp circuits...controller.....PCB....ran all trouble shooting diagrams in the manual. Nothing. I had a 3rd echelon mechanic fly up from Texas and he confirmed that the pumps were all bad. Is it possible for cold weather to jack up a IP?

Got grey smoke from the exhaust, truck was slaved, starter is fast, cycled the plugs 3 times. I will try the throttle thing when it gets cold again. Thanks.

Update - Stiil haven't found an answer to this problem. Temps are due to drop down again next week, I guess that will give me more time to figure it out!!

Stan - Do not be misled, These are not my personal vehicles. They are my work and work is good!!! All I have is an M1008.:D

I tried the back pressure trick but that didn't work either. Im at a loss because now that the weather warmed up, I have no way of troubleshooting the system. Thank you gentlemen for all the suggestions.

And I did open the fuel filter drain and had plenty of fuel. Im at a loss!!

I thought the same thing about the bad fuel / gelled fuel but I have 28 trucks and only 6 had the problem.

Using regular Diesel from the local Cirlce K. Glow plugs and controller are fine, put my foot through the floorboard. Nothing. When the trucks didnt start, i traced the fuel lines. All was good going into the pump but nothing coming out. Then for ****s and kicks, tried to start them again...

I need some help. Im in St Louis and the last couple weeks the temps dropped into the single digits. WIth in 4 days, I had 6 of my HMMWVs go down. Went through the basic troubleshooting and came up with nothing. Broke out the 20 manual and came down to bad fuel injection pumps. On 6 trucks. At...