engine ping
2lostspace
Jeep-CJ.com Moderator
I get this pinging rattling sound in my engine when under load, climbing hills or running at 2800rpm. It happens less with higher grade fuels. It is a AMC 258 i6 / 4.2l with a NP435 trans (4spd only use 3 of them). The engine has had some of the teamrush done to the distributor system. What are some of the things to do to fix this. What is the power ban on the AMC 258 i6 / 4.2l ?