99 F-350 was running fine with no problems 2 days ago service engine soon light came on and drove approx. 20 miles today truck ran fine parked and came out and the truck won't start. will turn over but won't fire

 

Welcome to the site..

Knowing the reason for the CEL/code would be a big help. It should have already had the CMP (cam sensor) sensor recall/replacement done (?) It could be one of the reasons for the no start. If no tach/RPM signal is detected, the IDM won't fire the injectors. When the engine is cranked do you see a tach needle bounce? Do you hear the fuel pump run?

 

Thanks hayapower Cam senser was replaced in oct and fuel pump replaced in june and appears to be working correctly

 

Who's CMP was it? Brand?

Whats the mileage on your PSD?

Was the reason for the recent CMP and pump replacement related to a previous no start condition?

Any kind of jerky/unstable idle 'prior' to the this no start? Did it 'try' and cough, sputter, on your restart attempt,, and now just cranks through?

Usually a failing CMP will restart, not always, but on a good running engine then an instant no start, a healthy tach signal is probably the first place I'd look. Could be a HP oil delivery/management problem too, or a few other possibilities. Could be a bad new part : / Might check the CMP connector as a first step, but without the code we're kind'a fly'n blind. Was/is there any tach needle bounce will cranking the engine?