I have a 93 with a 5.8L. For about the last week it has been pinging when I go up the hill (mountain from about 1500ft to 4500ft) to go home. I haven't done anything to it recently that would cause this. My Haynes manual shows how to adjust the timing but my Chilton one says not to. Also what does the octane rod in the distributor do.
It could be bad gas... I always use the middle grade in my 88. Otherwise it will ping under load. It could also just be time for a tune-up. New plugs, wires, cap & rotor. An engine very rarely just "goes out of time"
Thanks for the info. It's not the gas that was the first thing I did. It hasn't been that long for the tune up (about 2500mi) new plugs, wires, cap and rotor. I will check the wires this weekend and also the EGR.
Check your coil, weak spark also causes a ping on load. Pull the coil wire off the dist, then set it on somthing metal (alt, bracket), crank the engine, if it cracks loud and you see a blue spark your ok, if no noise or spark you need to replace it. Or if you have tester for spark duration and strength, that would be easy.
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