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That ticking sound is the injectors clicking, its normal. Pinging is a sound when you are climbing up a hill and the gear is high and the engine is out of power and needs to switch to a shorter gear, the pinging wil be heard if the motor is straining and you will hear a tingling tingling sound like a tapping, hit the gas and the tranny swtches gears to a lower one and the noise stops. I here this with most american cars like Pontiacs and such. I here it with the old 89 grand ams. Use 92+ octane for a few weeks and see if the noise stops. It may be low octane if its pinging. Run the high test for a while.
Chris 92 classic
 
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