By what you are saying it sounds to me like you are lacking in the fuel dept. Whats the tach say at 65MPH? Record it now take truck upto same RPM in lower gear. Same result runs out of poop? Timing can be an issue so could the coil. I would try loading it in another gear and check the timing again. <img src="/forums/images/graemlins/cheers.gif" alt="" />

87 Dodge Raider w/mits 2.3 Turbo Diesel 5 speed