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Old 07-07-2005, 02:18 PM
CaptScottNC CaptScottNC is offline
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Join Date: Apr 2005
Location: Atlantic Beach, NC
Posts: 48
Default Re: Engine Trouble... anyone got any ideas??

OK... Have a little more information. All cylinder are sparking although some appear to be sparking "weakly" and not near as strong as the others. All of this is at idle on the hose. I put a screwdriver in the plug wires and checked for the arc to the engine block or spark plug top. I will try and show a text diagram of the results unplugging each wire had on the engine idling. I unplugged each one at a time and recorded the change. This is from top to bottom if you were looking at the back of the engine.

Port Cylinders

Moderate change

No change or
maybe very little

BIG change

Starboard Cylinders

No Change

BIG change

Moderate change


Ok.. now what do you make out of this? Also, All plug wires zap me if I unplug them at idle by hand even through the insulation except for the middle port cylinder and the top starboard cylinder wires.

Electrical problems are so much fun. I hope to fix this today if I can figure out where to go next.
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Scott
Atlantic Beach, NC
1977 Sea Craft 23SF
250hp Suzie 4-stroke
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