1978 Mercruiser 228 won't start after engine get hot

[bluekmiller31]

Hi all this has been an on going problem and have just been chasing it for a few seasons trying to figure it out but I'm stumped. I've converted the distributor to electronic and have a brand new coil. All plugs and wires are new, and carb has a recent rebuild. After the boat gets hot and sits for a few minutes it will not fire. It will hit but immediately dies. Any and all suggestions would be awesome as I am about to wits end on this thing!

 

[bluekmiller31]

Anyone?

 

[harleyman1975]

fuel pressure too high or too low?

 

[Alumarine]

Have you tried advancing the throttle slightly while in the throttle only position?

 

[09TNRT]

Next time it does it see if you're getting voltage to the coil from the ignition switch.

 

[ziggy]

a good place to start would be w/ mercruiser service manual #3. ya can find it here. look on page 1C-6 for a start (no pun intended. 1c6 is the beginning of engine cranks over, but won't start or hard to start). it's the trouble shooting part of that s/m.
another thought would be the aftermarket distributor ya put on. be sure that's done proper too...

might make sure service manual #3 is for yer rig. confirm by serial number of yer engine.

 

[bluekmiller31]

Harleyman I haven't check fuel pressure I just figured it was ok since the boat runs fine when you first start it up until you shut it off after it gets up to temp.

Marc I have tried advancing the throttle some when trying to start it while it's acting up however I read a post earlier that said try full throttle position but be ready to back it down if it fires?

09trnt and soggy thank you both for your insight I will look into both suggestions