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1998 Merc 200 EFI, Poor hole shot.

fishinwrench

fishinwrench

Contributing Member
Compression is ok 130/hi-124/lo, Fuel pressure is good, No loss of spark and timing is spec.
Cylinder drop test indicates that none of the cylinders on the port bank are carrying a load like the starboard bank is.
The Starboard head also runs considerably warmer than the port side.

Knowing all of this, where would you start looking to diagnose the cause of a sudden lost hole shot?

WOT RPM is 5600 with a full fuel tank and empty livewells, two passengers.

Thanks, Wrench
 
When I first got my boat I lived in Louisiana. I had relatives in Idaho and took my boat to see them. The hole shot was completely awful when I put it on the water. Found out that it had something to do with the thinner air or atmospheric conditions being different. I ended up taking two of the three plastic rings out of my Tempest Plus and the thing took off. Problem fixed. It might be worth looking at if all your other diagnostics have checked out.
 
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