Truck wont start how do i check the cp3 i put on a fass and truck started shut it off and will not start back. I have loosen the filter and made sure all air was out. and the pump is pumping, i have also check all fuse's. Anyclues?????????????? Truck has been down a month

 

Have you got fuel to the CP3??

 

Double check to make sure you have the routing on the FASS correct. You wouldn't believe how many folks get the return and engine supply backwards and with the fass returning everything to tank the motor gets nothing. Start there.

Next, do you have any white smoke while cranking? If so, you have an injector stuck open.

 

Updates??