I was heading Offshore saturday am. Had gassed boat, loaded tackle/coolers and had bait. Was heading out canal and throttled up to plane and port motor (2003 115 Merc-carbed) started missing-rpm would fall about 3000-5000 rpms-in and out every 20 seconds or so. Would be at 4300 rpm then fall to 3800 rpm then back to 4300 then within seconds back to 3800. At idle in neutral would go to max rpms (6000), but if in forward would not, so once load was on engine, it acted up.
In the evening, I pulled the plugs-not fouled-and sanded them and put em back in and tried another run in bay and same thing-rpm drop and fluctuates same as in morning. Boat ran fine on last trip a few weeks ago.
I did not test coils by pulling a spark plug wire off while at idle (didn't have plastic pliers or coated gloves) and seeing if idle changes/motor dies and need to do that.
I'm thinking power pack maybe? If so, what does a power pack generally cost?
Your thoughts?
In the evening, I pulled the plugs-not fouled-and sanded them and put em back in and tried another run in bay and same thing-rpm drop and fluctuates same as in morning. Boat ran fine on last trip a few weeks ago.
I did not test coils by pulling a spark plug wire off while at idle (didn't have plastic pliers or coated gloves) and seeing if idle changes/motor dies and need to do that.
I'm thinking power pack maybe? If so, what does a power pack generally cost?
Your thoughts?
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