Spark plug 2 heat ranges colder HELP

[wpurple]

I am trying to find Autolite or Motocraft plugs for my 99 Mountaineer 5L that are 2 heat ranges colder than stock and I can't find any.

I am running platnums 1 range colder and with the blower, I am getting some hot spots on the insulator.

Stock Autolite are 764, 1 colder is 103 and Autolite technical assist says that they don't make one colder than 103.

Motocraft Stock are AGSF32FM, the copper equiv is AGSW32C, and they don't make a AGSW12C

WFT?

 

[fig]

spark plugs colder

Go with a different brand. I went one colder with my Blower and no problems. I got the NGK IRIDIUM IX(3689) and they are pregapped at .40. I'm sure if you called NGK they would be able to get the plug you want.

Good Luck

 

[Green98XLT]

Either way I would get the platinums out of there!

Call up NGK as fig said, they are great.

 

[wpurple]

A buddy of mine had connections....he runs NGKTR6 gapped at .032 on 5L blown apps.