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  1. M

    what plug is right?

    2001 1500 with 5.9 with 185 tstat. Which spark plug should I use? Sorry for double posting. Can somebody nuke one!
  2. M

    2001 5.9 pinging under heavy load

    I just changed plugs and wires and was sold ngk v power ZFR6F-11 plugs. I'm running a 185 tstat. Now it really pings badly. Help!
  3. M

    5.9 pinging under heavy load

    My 2001 5.9 gas burner under heavy uphill acceleration will ping like a fireworks display. What's wrong?
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