.028 on plugs and .018 on points
The 1997 model Mercury, 225 hp EFI uses a NGK BR8HS plug, gapped to .035 in.
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on the lower right side of the crankcase. Large plug with a spring and strainer behind it.
.40
The one closest to the radiator is number 1.
very front of motor
it is on the side of the motor just under the shifter
The one closest to the radiator.The one closest to the radiator.
According to my Chilton's Auto Repair Manual : The 225 slant six cylinder engine in a 1978 Dodge has spark plugs gapped at : ( .035 inch )
[-sqrt(2), -sqrt(2)]
215/65-R16 although I've had tire shops try to sell me 225/60-R16 because there's more of a choice.
$225 for the initial visit to plug holes, lay bait and tracking powder. New York City.