I have a 1990 Tot Xcab, v6, 4"lift, 33 inch tires, K@N, Blah Blah Blah. I am hearing a pinging noise coming from the engine mainly on the HWY at 3000 RPM 60-70 MPH, mostly while the engine is under load, slight hill or accelerating. Other then that I do not hear it. The engine has aprox 170K, oil changed every 3500 miles. Dumped some BG44 in the tank as well as used there injector cleaner. Engine ran better but still hearing the pinging. Checked the timing and it is at 10 degrees as well as the idle is at 800. Any ideas why it is pinging and how I can fix it and in the long run can this damage my engine? Any comments would be greatly appreciated. Thanks JMach1
- posted
19 years ago