Author Question: The following statements are all correct EXCEPT ________. (Read 125 times)

jwb375 · **on:** Aug 13, 2021

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