5.0 pinging

[broncaholic]

The bronco was pinging yesterday on flat land with my 2 boys in the back. I was cruising at around 70 mph and got on it to pass someone. Ambient temp was about 102, engine temp about 180 and nothing else to note. Running a C-4 with 3.50 gears. Any thoughts? Timing was checked ok.

 

[Broncobowsher]

Did you delete the EGR? EGR gasses are known to cool a combustion chamber and reduce detonation.

Aftermarket MAF? Could be showing less are then really flowing and a lean condition.

You said you checked timing, what is it set at?

Any parts on the engine that are not stock?

 

[av bronco]

Sometimes I get a bad tank of gas.

 

[broncaholic]

Did you delete the EGR? EGR gasses are known to cool a combustion chamber and reduce detonation.

Aftermarket MAF? Could be showing less are then really flowing and a lean condition.
Stock MAF.

You said you checked timing, what is it set at?
12 deg BTDC.

Any parts on the engine that are not stock?

1. Was a Mass Air converted with a stock MAF.
2. Deleted when I installed the 5.0. Not running any smog.
3. 12 deg BTDC
4. Edelbrock cam that I am thinking of taking out and replacing with the stock cam. I am not real happy about the performance.

Thanks.

 

[Broncobowsher]

1 fine
2 that has been known to cause some ping, but usually at cruise and not power
3 try 10°
4 different valve timing may be causing higher then expected cylinder pressures for the computer.