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43L Merc IO runs fine when not in gear and at an idle in gear but stalls when accelerating

L

LyndonEh

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I've got a 1986 4.3 ltr 18

I've got a 1986 4.3 ltr 185 hp Mercuiser I/O with an Alpha leg. Just tuned it up to use it for the first time this year(sadly). It ran fine in the driveway so we took it up to the lake for a day of fun with friends. It started and idled in gear fine but abruptly stalled when trying to accelerate. It revs up and runs fine at higher RPM when not in gear. The SELCO manual is not much help. Any ideas?
 
its the shift interrupt switch

its the shift interrupt switch being pushed due to friction in the shifter cable. Replace your shift cable.
 
"You can also check the accele

"You can also check the accelerator pump inside the carb. With the engine off, look down the carb and have someone goose the throttle. You should see a stream of raw gas shoot out. Good luck."
 
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