2006 4.3 mercruiser not starting

[airpro]

this boat will run great and start every time, unless it sits for 1/2 hour or so after running. then it will not start for another 20-30 minutes. also the fuel pump has started squealing.

 

[Don S]

Re: 2006 4.3 mercruiser not starting

Sounds a lot like vapor lock.
Here is a Merc service bulletin on the subject.
http://www.boatfix.com/merc/Bullet/99/99_07.pdf

 

[sethjon]

Re: 2006 4.3 mercruiser not starting

When it won't start, will it turn over?