Crossfire 2004,wont start usually when hot,replaced the cps,still the same,when monitoring the fuel pressure it dropped from 57psi to 11psi and the engine die of course!;Started again everything fine the residual pressure its holding at 30psi after 2 hours. Which could be the problem the fuel pump, the relay or something else?

Also check the relay with a magnify glass ,all of them shiny like new.


After 3hours the residual pressure dropped to 20psi,turned the key to run position the pump did not kicked in, did this a few times and got the pump to work pressure went to 57psi,fired the engine then the pressure dropped again in a few seconds. Did this a few more times until the engine kept going,turned it off. Tomorrow I'll keep troubleshooting. All advices are welcome.