Engine serial # OT651661
My optimax starts up perfectly everytime but it has a stumble right off idle and sometimes it will die when putting in gear.If it doesn't die then it had a definite stumble but once it gets past that it runs fine. I've recently put a tracker valve and chris carson reeds in it. Any ideas?
Last edited by easttn03triton; 06-02-2022 at 08:36 PM.
monitor fuel psi when this occurs
.................................................. ...the scariest thing in life is the unknown ...................................
10-4, was going to be my next step.
.................................................. ...the scariest thing in life is the unknown ...................................
I'm wondering if using Denso and not NGK plugs could be messing with anything?
Absolutely: http://www.bbcboards.net/show-thread.php?t=24924
Mercury 2002 200hp Carbed Saltwater
OT566776
2002 Cape Horn 22' Bay
^^^^^^^+ 1
.................................................. ...the scariest thing in life is the unknown ...................................
+2... use ONLY the specified NGK Iridium Spark Plugs (IZFR5G, gapped at .032-.033").
BTW... your engine is a 3L Model. Moving your post to the correct (3L) forum.
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
Update guys. Fuel and air pressures checked out ok. Pulled the plugs and installed NGK's found the #6 plug wire had been arking inside and burnt the boot up at the plug end as well.
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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