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Installed Bosch platinum 2 Plugs = ROUGH Idle + CEL

I believe double Platinum has a second piece of platinum on the ground electrode to help prevent it from wearing down

200703_SparkPlug_002.jpg
 






bosch plat +2

just installed in my 03 Explorer, bosch plat +2
4.0L, good or bad?
 






tjnissen said:
just installed in my 03 Explorer, bosch plat +2
4.0L, good or bad?
Click to expand...

Bad mistake. I guarantee in 6 months you'll be replacing those POS plugs.

A real interesting note on this thread is the fact the original poster is a one post wonder.
 






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