The following statements are all correct EXCEPT ________.

[jwb375]

The following statements are all correct EXCEPT ________.
◦ Relearning the PCM should never be attempted
◦ On engines operating very poorly, the PCM should be relearned after fuel system cleaning
◦ Fuel systems that have never been cleaned may have developed wax deposits as well as carbon
◦ The fuel rail and pressure regulator should be cleaned as well as fuel injectors

[asware1]

Relearning the PCM should never be attempted

[jwb375]

Thanks for the timely response, appreciate it

[rleezy04]

Great answer, keep it coming