Resistor vs. non resistor plugs?
12-19-2013, 08:34 PM
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99 E320 W210
Resistor vs. non resistor plugs?
When replacing my spark plugs I noticed the difference being a R in the model fr8dpp33, the ones I pulled out were f8dpp33. Ive read other threads some people say it don't matter some say it do. Too much resistance weakening the spark. Going back im thinking maybe my rough idle problem started after replacing the plugs.
12-20-2013, 08:54 PM
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Thanks for replies, I got 12 f8dper used original sparkplugs. Im going to go ahead and try them to see what happens. I mean the car was made and sold with these plugs. They are non resistor right?
