But with the GP bypass I see you have to be careful, I guess 7.3 use 6V at the GP and when people bypass they send 12V volts and can burn them up quick.

 

It don't roll coal at all but I tried turning the pump up the other day to get it to but nothing many I turned it down ? Fuel return lines are new injectors are new unknown miles on pump as I think the motor was swapped before I got it I have a pump I know has 130,000 on it

 

Also people feel the need to hold the switch for 15+ seconds and melt the plugs

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There's a plug on the passenger side wheel well, connects 10 wires I believe, and it also connects the glow plug wires together, but with so much voltage they glowplug wires melt where they connect in that harness, unplug it and check. I had to splice together mine and fixed a lot of problems

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And does your truck starts right up when hot correct? Then I would switch your fuel filter with a one piece, just to help eliminate any air intrusions

 

Ok ill look when I get home see if its wires it was cycling yesterday in the garage but i was thinking it sounded weak comforts to what it usually dose

 

The starter could very well be weak, if it doesn't turn over fast enough, then its like kicking the beast while it's down, it make turn over the engine which would cause you to think its still good, but very well maybe not be

 

brand new starter about a two months ago when it started getting cold also two new batts alternater and positive and negitive cables i have spent alot of money to try to prevent this sort of thing from happening maby i will take the starter back to the parts store and get a new one just to see but it cranks it over pretty good even in the cold i am wondering if it may be i turned the pump down instead of up ?

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my fuel filter is a one piece
and yes when its warm she fires up with one crank of the motor

 

how long is your WTS on for when you turn the key?

 

id say 10 to 15 secounds i havent acually timed it but i have checked the glow plugs with the relay out of the block and i know it takes two to 3 cycles to get them to acually glow

 

Have you replaced the controller yet?

 

no i havent got the chance will be doing that in the am

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Ok box is changed tonight is supposed to get down to 30 below we will see in the am if she starts or not