3.4L pings under heavy acceleration

I just changed my spark plugs and wires yesterday. Engine sounded perfect prior to the project, now it pings under heavy acceleration.

I have the OEM Denso spark plugs in there, but it was my first time changing them myself so I could have made a mistake. Any ideas?

 

Dear John,

Sorry to hear you have a ping after changing out your spark plugs. The spark plugs that mot of the Tacoma World members prefer are the dual electrode Nippondenso model number

$18 K16TR11 Spark Plugs, Pack of 4

K16TR11, or the dual electrode NGK model number

$6 BKR5EKB-11 NGK Spark Plug Stock # 3967

BKR5EKB-11. The spark plugs also need to be set to a 1.1 millimeter gap. Unfortunately, I don't know enough about Denso plugs to give you an opinion as to whether or not they could be the culprit of your annoying ping under heavy acceleration. Obviously, you did something yesterday when you changed out the plugs to cause the problem since you did not have the problem before you started the project.

Good Luck,
Paul

 

I may have to take it in to a shop to have them troubleshoot.

 

look at the receipt for the plugs you bought or pull one and tell us what you put in... certain plugs have what is called a projected tip and this will cause pre-ignition.

you can put the old ones back in a see if it goes away too... yah a bit of work but if you want to know for sure.