changed cp3 now car is not starting turns over fine but no fire no codes either 2005 jeep liberty crd 2.8 also have extra connector running off of the injector glow plug has purple inside of it could this be the cause of my not starting issue

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It's possible that extra connector could be causing an issue preventing the engine from starting. Since it's after a CP3 change when the problem began, I would suggest double checking all the wiring connections related to the fuel system and glow plugs. Make sure nothing got disconnected during the work. A bad connection could explain no start with no codes.