Hi guys, been a while since the last post but I do read on here when I get a chance. Anyways, im working on a 02 Powerstroke for a guy at work. It will not start unless its plugged in. Weve had some warm weather 70+ in the last few days and itll just crank and puff white in the rear. Owner had three g/p and three injectors replaced a while back. I told him he should have replaced all off them and not some of both. Anyways, are these strokers really that hard starting that a guy must use the g/p's ? My 02 Cummins will fire in 0? without grid heaters !!! Itll sound like the neibhor kids beatin the heck out disk blades but she'll fire up with ease. Not this stroker !!! Cranks and cranks. Plug it in a few hrs and she'll lite fine. It does need a new g/p relay. Are there two glowplug relays or just one ? If one then whats the other relay for ? Thanks