Mercruiser 3.0 Alpha One starting in water issues

UR2EZ

Recruit
Joined
May 13, 2019
Messages
2
I just acquired a 1994 Bayliner Capri 1750 with a Mercruiser 3.o Alpha One that had been sitting for three months from a buddy. Got it home and noticed that the battery was dead. Bought a new battery, put ears on it, and fired right up. Went through forward, reverse, and neutral and everything ran fine. Loaded everyone up, went to the lake, unloaded it and I could not get it to start for anything. After about an hour, I decided to load it up and head home. Bought everything for a tune-up hoping that it would solve my issues. Changed the gear oil, plugs, wires, fuel filter, distributor cap and rotor. Placed the ears on it and it fired right up and ran like a top. Loaded everyone up, went down to the lake again, unloaded it, and again it would not start. I have the stuff for an oil change and will tackle that too but the oil looks good so am trying to find out why it is not running after I get it in the water. I'm thinking that the carb might be flooding but am unsure. The first time it did this, I could see a good amount of fuel in the carb. Not sure if this is normal or not. This is my first ever inboard/outboard and know nothing about these boats or motors. I am pretty well mechanically inclined but without any guidance, I am stumped and do not want to keep throwing money at it with no sort of direction. The plugs and wires were definitely old and needed replaced and I always like to start things off with a fresh tune-up so I know where it stands. This issue doesn't make much sense to me at all and I would greatly appreciate, and accept, all/any advice before I take it to a mechanic. Thank you and I hope y'all have a wonderful day!
 

UR2EZ

Recruit
Joined
May 13, 2019
Messages
2
Just went out there and tried to start it again, after it had been sitting since yesterday afternoon, and it wouldn't start; even though I had ears on it
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,310
I'm thinking that the carb might be flooding but am unsure.

Ayuh,...... Welcome Aboard,..... Pull the spark plugs,.... Are they wet, or dry,..??
 

Scott06

Admiral
Joined
Apr 20, 2014
Messages
7,189
Yeah when it won't start -check if it has fouled the plugs and see if you have spark. Wondering if shift interrupt is killing spark.
 

Luv2fish36

Seaman Apprentice
Joined
Apr 22, 2019
Messages
33
Are you trying to start it with the handle straight up in neutral? Or are you pushing in the the throttle only button and advancing the throttle?
 
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