When I throttle up the motor does fine until I get to almost full throttle were it trys to bog down. If I push quickly enough to full throttle the motor runs as it should. Its like I have a dead spot right before I get to full throttle. I have had new reed valves and I have put in new spark plugs. Any help would be appreciated.
Last edited by ltsjr602; 06-06-2020 at 07:44 PM. Reason: adding serial number
How long since you rebuilt all three carbs?
90 Shadow 20' Mod V w/ 200 Merc - Total resto and loving it!
Here's my build from cap-off to boat in the water.
http://www.bbcboards.net/showthread.php?t=336645
Have you dine a thorough decarb with sea foam?
90 Shadow 20' Mod V w/ 200 Merc - Total resto and loving it!
Here's my build from cap-off to boat in the water.
http://www.bbcboards.net/showthread.php?t=336645
I have only had the boat for 2 years. The previous owner said that he had the carbs rebuilt prior to selling. I have not use sea foam, but I have used power tune.
Wrong forum- moving over to the 2.0/2.4/2.5L Forum. Please be sure to update your thread with the engine serial number.
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
Found out what was causing the dead spot when throttling up. A couple of the jets were missing in the carburetor. Replaced the ones missing and that fixed it.
Hmmmm
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
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