Starting Motor at Lake

tlamos

Cadet
Joined
Aug 31, 2010
Messages
13
I have a 1986 Mercury 115 Horse 6CYL has been a very good motor to me,but always starts hard at the Lake. I can keep motor down in my driveway with muffs on and it starts great I just spin over and hit choke it fires right up.But when I lift motor with trim for transport to the Lake once I back in the water and lower the motor then try to start I spin and then hit the choke once will not start like in my driveway I have to crank and crank and play with the choke it will start After a while. Do you think by lifting the motor it might be flooding it? I have no clue why it does that,anybody have any ideas on my problem. Thank You
 

mr 88

Commander
Joined
Nov 3, 2010
Messages
2,282
Re: Starting Motor at Lake

These beasts like to be over primed. Just keep squeezing the bulb,even after it gets hard you give it more. Just like the commercial with the kids when the girl says we want more,,,,its not complicated.The Towers want more gas,they are almost impossible to flood out so do not worry about that.You are forcing gas into the system instead of waiting for the motor to try and suck it back to the plugs.Lifting the motor would actually drain the carbs,especially the L6s,not flood them,which as I stated is very hard to do. As far as the driveway on plugs vs the lake in the water,, more back pressure in the lake because the exhaust is now restricted under water, makes it turn over a little slower.Try that and report back.
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: Starting Motor at Lake

If the carbs have been synched and idle adjusted while on the muffs hard starting in the water is almost guaranteed. Do a link 'n' synch while in the water with back pressure on the exhaust.
 

SKDave

Seaman Apprentice
Joined
Jun 25, 2011
Messages
31
Re: Starting Motor at Lake

How does it run besides the hard starting?
 
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