New to site and I have a 88' f250 7.3 that keeps eating glows plugs. I just put a new ip, injectors, return lines, and a lift pump on it. The truck has not been 5 miles since I have done it. I use it only around the farm for right now till I can get it running right. I used the test light to test the glow plugs and found 5 of them bad. (I put new (8) Delphi in it the day I replace everything). I got to get it running right to start driving back to work. Any ideas on what could be happening with this? I read some of the tech writeups and still can't figure it out. I got a new gp relay I fixing to put on it to see if the could be it. Thanks for any help.