merc 140 i o wont start when warm

dondi

Seaman
Joined
Apr 14, 2011
Messages
61
1985 merc i o 140 wont start when its warm turns over but thats it i am thinking its the carb but just a guess any help appreciated thanks
 

Bt Doctur

Supreme Mariner
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Aug 29, 2004
Messages
19,369
Re: merc 140 i o wont start when warm

And just how are you trying to start it ?? How long does it sit drifting before you restart it?
Some need the throttle pumped if its a carb model, others just need the throttle open a bit.
It`s not like a car and just turn the key.
 

dondi

Seaman
Joined
Apr 14, 2011
Messages
61
Re: merc 140 i o wont start when warm

And just how are you trying to start it ?? How long does it sit drifting before you restart it?
Some need the throttle pumped if its a carb model, others just need the throttle open a bit.
It`s not like a car and just turn the key.

ok thanks it starts fine when cold but after reaching fishing ground about 20 minutes it turns over but wont start had to get a tow twice lol thanks
 

90stingray

Lieutenant Junior Grade
Joined
Oct 26, 2010
Messages
1,162
Re: merc 140 i o wont start when warm

How do you start it cold? Put it in throttle mode and give her a couple pumps? If the carb is not adjusted well... sometimes you will need to open the throttle to get her going after its warmed up. Also, they make a thick carb base gasket to help fight heat transfer. Just something to think about.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,149
Re: merc 140 i o wont start when warm

Ayuh,... When it won't start,...
LOOK to See whether it's lacking Fuel, or Spark....
 
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