My trucks glow plugs are normally done in about 8 seconds on the morning start. i put new boots on my truck and now when i go to star it the plugs just keep running. And then when i go to start it the truck just over revs and i have to shut it off. im sure if i didnt turn the key off it would go up to the rev limiter. i already have disconnected the batteries for a few hours and the same thing happens. thanks