02 v10 detonation,
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Joined: Nov 2012
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02 v10 detonation,
So my 02 has 116,000 miles, Im running a superchip programmer set to the towing performance setting, It will detonate or pre ignite when at WOT, from around 3500 rpm to around 4500 rpm. I have been running the chip since it was new and i never had a problem unless i wasnt running 91 octane. Now it does it even with 91. I tow alot and pull alot of steep grades seeing that rpm range alot. I dont want to damage anything, Im wondering if this could have contributed to me ejecting a plug a while ago. Thinking of returning it back to stock, or could the knock sensor be bad?
Elder User
Joined: Feb 2006
Posts: 545
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From: FL
Did you change all of your spark-plugs at the time of plug blow-out ?
Are they all OEM Motocraft plugs (or Autolite platinum) ?
Fouled ( old and dirty ) spark plugs could be one reason for detonation .
Sometime I wonder about the same question ( about higher RPM and possibility of plug ejection) . My logic says , at higher RPMs , there is more fuel in the combustion chamber , so more fuel means more combustion gases that results in higher psi pressure in the cylinder . If weakened plug thread already exist , then it might be the right time . Though , I read some reports , some blow-outs occurred at low RPM flat driving conditions .
Are they all OEM Motocraft plugs (or Autolite platinum) ?
Fouled ( old and dirty ) spark plugs could be one reason for detonation .
Sometime I wonder about the same question ( about higher RPM and possibility of plug ejection) . My logic says , at higher RPMs , there is more fuel in the combustion chamber , so more fuel means more combustion gases that results in higher psi pressure in the cylinder . If weakened plug thread already exist , then it might be the right time . Though , I read some reports , some blow-outs occurred at low RPM flat driving conditions .
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