ping when get hot on 1991 Toyota Corolla

when it get hot it start to ping, but when u step down on the gas it stop.

by in Manchester, NH on April 11, 2011
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
1 answer
ANSWER by , April 19, 2011
I suspect the EGR valve's plugged or faulty causing the ping at part throttle.