Pinging is pre ignition. Something is starting the combustion burn before is
suppose to. Sometimes it is caused by carbon build-up in the combustion
chamber, a run-rite fuel tune is suppose to burn out the carbon.
We sell it at our
store, and I do believe it helps. I would start with a good tune up, and go
Stephen W. Hansen
ASE Certified Master Automobile Technician
ASE Undercar Specialist