Dies after awhile

trinae16

Recruit
Joined
Aug 1, 2010
Messages
2
I have a 1990 OMC 4.3. We are experience a problem with it after we've been out for a about an hour. We were pulling a skier and it just missed then died at about 28 mph. After struggling to get the skier back in it must have cooled off enough to start back up. We checked, fuel -water seperator, inline filter- all seemed Ok. Was getting gas and turning over, just not starting. After about 15 minutes it started but only ran for about 5 minutes before doing the same thing. We loaded up and started for home. Again it died, took about 15 minutes before it would start, so we decided to try just motoring back to the dock with the transmission just engaged, not full out. This time it lasted about 10 minutes before dying. Ok time for rescue, called the sheriff and they towed us back in.
It was just tuned at the end of last year, carb boiled and rebuilted, new points, rotor, cap, plugs, battery. Could it be the coil ? It did seem awfully hot to the touch. The ignition switch seems to be working OK. I know if I take it to the shop, they may not be able to find the problem as it is OK while cold and not under a load.

Please help. We're at a loss.
 

Captain Ben

Seaman
Joined
Dec 15, 2009
Messages
54
Re: Dies after awhile

does that have a ignition amplifier like the merc?

When it does die, and won't start, check to see if you are getting any spark.

Cehck your wiring, just trace the wires and inspect them. Do you have a batery switch? Check your connections there for corrosion.
 

trinae16

Recruit
Joined
Aug 1, 2010
Messages
2
Re: Dies after awhile

Don't think this has the amplifier on it. We did not think about see about if it was getting any spark. We'll take a sparky out with us the next time. If no spark is that coil issues? Battery connections were all clean and tight. We will trace wires and inspect on dry land. As being upside down and in small spaces while being knocked around on water will more than likely turn into sea sickness. Thanks for response.
 

6meter

Chief Petty Officer
Joined
May 15, 2010
Messages
525
Re: Dies after awhile

Had the same problems you have. HOT coil tells me anyhow, its no good. Replaced mine, no more stalling.
 
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