OK, I'm rolling down the road at a constant 50-55 mph.
Trucks starts audibly "rattling", and exhaust starts putting out thick gray-to-black smoke screen, and truck accelerates to 60 mph. Then, it stops smoking etc on its own.
Once, I pulled off, and the coolant temp was up substantially on the OEM guage.
Is this the hi pressure fuel injection pump going bad?
The smoke along with the hot motor sounds like a over fueling situation and or not enough air. Have you check your air filter and air inlet hoses. I have a open air filter and I used the 4" plastic hose on the back side of my air filter for several years and it work until one day it collapsed under acceleration ( I thought the motor went ) I am not a injector expert, but could one or two injectors hang open and dump to much fuel in the chamber(s) when it should not, which could cause overfueling, resulting in the black smoke and high EGT's?
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94 F-350 C/C 4X4 long bed, 7.3 idi Turbo Diesel. ZF-5, 6" lift 35x12.5x16.5 BFG'S. ATC Turbo Upgrade, ATS Intercooler, 4" exhaust. Under cab battery relocation. Open Airfilter. 2005 VW Rabbit Diesel TDI 5-speed, panzer plate.
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