Engine pinging HELP !

[2ndgsx]

Help with engine pinging

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Trying to track down engine pinging. 97 auto GSX turbo engine TOTALLY stock ...for now. When engine is under slight to moderate load, like going up a hill before engine kicks down upon accelerating it pings ...not sure it's detonation but sounds like a pinging. Using 91oct Mobil or Cheveron Tectron. Have had the following looked at :

Timing
Fuel pressure
TPS sensor
MAF

All ok

Replaced :

Fuel pressure regulator
Fuel filter
Crank Sensor
New plugs and plug wires

Not throwing any codes , EGT Temp's are normal , engine not overheating but engine is down on power alittle. Does not ping all the time but at once a day when driven. Out of ideas at this point. Also thought it might be injectors going out or clogged. Ran injector cleaner...nothing. Road Race Engineering says probably not injectors. Want to modify motor but want this resolved first. Thx for any help.

 

[Spoolin4Ever]

Seafom it, change fuel filter if needed, check plugs.

Old post but just in case someone else is looking

I just overcame the pinging on an NT car doing this.