2 Answers

Instructions
1
Accelerate slightly at the first instance of a pinging noise, and listen carefully to see if the noises get louder or start sounding off in faster succession.

2
Stop the car at the nearest opportunity, put it in park and turn the engine off. Listen very carefully to see if the engine runs and lingers a little longer than usual after you turn the key. If you get a positive result in this test and the one in step 1, proceed to the next step. If not, take your car to a mechanic for a diagnostic check.

3
Listen carefully to see if the pinging continues when you accelerate. Try turning the car off again as well to see if the running engine still lingers. If both conditions improve, use premium gas from that point on. If both problems remain, take your car to a mechanic for an official diagnostic.

4
Check the fuel level in your car. If you have less than a half tank of gas, drive to the nearest fueling station and fill it up with premium gasoline. If you have more than half a tank of gas, run the tank down to at least 1/8 of a tank and then fill it up with premium gasoline.

Read more: How to Correct a Pinging Sound From a Car's Engine | eHow.com http://www.ehow.com/how_4576316_correct-pinging-sound-cars-engine.html#ixzz28Ig8dlPh

country bumpkin

HELLO

Be sure to check the Pinginator -- They do that sometimes.