2001 Jeep Grand Cherokee 4.0 4x4 Started having a little misfire and hard starting, so I decided to pull the plugs. All were so eroded that they were at .055-.060, instead of the spec .035. Plug #4 looked like this: I guess this was a long time coming. Still have a bit of rough starting sometimes. Just put Gum out in the tank, and doing Chem tool through the intake tomorrow.
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