Boss told me his truck had been starting harder as in cranking longer before firing latley. So I thought maybe it was the FICM. Checked it with the scanner today and it was perfect yet so I check the codes and came up with these two.

P0341- Cam Position Sensor Circuit Performance

P0272- Cylinder 4 Contribution/Balance Fault


Anyone have any ideas on these? I have never run across these and am lost as to where even to start.

 

Chase the Injector First its likely bad

you can do a Bubble test


Has he had an issues with the RPM Gauge???

 

No issue with any of the gauges. Call me dumb but what is a bubble test?? I can check just about anything with the snap on scanner I am using.

 

then do a Cylinder balance test

Also Buzz each Injector listen to the tone of each buzz

 

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being a range preformance DTC you may need a new CMP Sensor

 

Thanks for the info will hopefully get to it on Monday.

 

If you have a DVM you can check the Cam sensor