Hi,
'95 Corolla 4A-FE, 80k miles, pings under load (when climbing hill), mainly on days when the air is dry. It also seems to have a harder time climbing. The car eats some 1/2 quart of oil between changes. I tried several brands of fuel additives with no improvement.
Timing belt is the original. Could changing the belt fix the pinging? Or maybe the timing needs to be adjusted? How is this done on a 95 Corolla?
Thanks.