05 200HP OPTI-MAX

crappieslab

Cadet
Joined
Apr 22, 2006
Messages
8
My 200 has a miss while idleing in neutral and in forward while idleing the rpm jumps up causing the boat to surge. I've looked at several things and noticed the spark plug for that cyl. (#2) is black exactlly half the way around the porceline and the other half is white/light tan. All the other plugs in #'s 1,3,4,5,6 are white/light tan all the way around the porceline. I've checked fuel/air pressure it's ok,compression it's ok,swopped direct injector and put new fuel injector and plugs. Put new coil and wire,swapped coil drivers and have had no luck. I can pull the plug on the coil for #2 and the motor smothens out and pull the plugs on the other cyls and it gets rougher on each one of them. ANY IDEAS OR HELP? thanks
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: 05 200HP OPTI-MAX

Howdy, Slab.<br /><br />Welcome to iboats. :) <br /><br />This is the wrong forum for trouble questions. I will put it in Merc troubles for you.
 
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