Vehicle has over 170k miles, 4.0L Vin X engine.....doing some minor engine
work, also time for a new set of plugs. I put in Motorcraft Platinum, No.
AWSF42P back in 1998. Was thinking of using standard Autolite Platinum
plug, No. AP765 or Bosch Platinum Plus 2, No. 4305. The Bosch plug is a
dual electrode plug. Is the dual electrode plug worth the money.....better
power and improvement in gas mileage, or should I stick with the single
electrode platinum plug.
Thanks for the help in advance.
Personally I would stick with autolite or motorcraft platinum plug
with single electrode. To much spark is just as bad as not enough I
would stick with plugs that meet OEM standards and in the shop I have
seen the dual electrodes cause problems.
Hope this helps!
I thought that was silly myself. What he was probably experiencing isn't
muh spark, but rather the spark being in the wrong place in the combustion
chamber, or the heat range of the plug being wrong.
Contrary to popular belief, heat ranges of plugs don't exactly cross
between manufacturers. I think the rule of thumb was that Japanese
plugs tend to run cold, and American plugs tend to run hot, or some
Obviously, a plug that didn't project the tip into the correct location
into the chamber would cause problems too.
My personal opinion for what it's worth is the only thing worth paying
extra for on a plug is platinum as the plug will last longer. But, that is
almost not noticeable, since modern ignition runs at such high voltage
that it will fire a plug that is carboned, oil soaked, MTBE contaminated,
worn tips, etc. etc. as long as the plug wires and coil is in good shape.
Back in the good old days with point ignition it was more important
to have nice clean plugs with sharp edges on the tips.
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