tired of being towed

dj13 · Jul 23, 2010

I have a 99 Larson with a 4.3 volvo. I can lauch the boat and it starts and runs great. I can start and stop the engine all day long until I let it set for about 45 minutes or so. The engine will the start and run about 50 yards and it will die and it will not start back. I have changed the coil, the fuel pump relay, kill switch. I am at a loss.

cr2k · Jul 23, 2010

Re: tired of being towed

Have you checked the quality of your fuel and any debris/water in the tank?
Fuel/water separator?

woosterken · Jul 23, 2010

Re: tired of being towed

check the charging system and the condition of the battery also.

woosterken

dj13 · Jul 23, 2010

Re: tired of being towed

checked fuel filters no debris or water visable

spktho · Jul 23, 2010

Re: tired of being towed

check the wire/connection from the fuel pump relay to the alternator.

Simoniz · Jul 24, 2010

Re: tired of being towed

Where is your fuel pump mounted?

Could it be getting hot and vapour locking during your 45 minutes sitting (with a hot engine), thus only allowing 50m of running from what fuel is in the carb float bowl?

EddiePetty · Jul 24, 2010

Re: tired of being towed

dj13 said:
...... I can start and stop the engine all day long until I let it set for about 45 minutes or so. The engine will the start and run about 50 yards and it will die and it will not start back........

Are you sure you're not simply running out of gas???? Just because the gauge says you got fuel doesn't necessarly mean so. Additionally, just because there is fuel remaining in the tank does not mean the pump can pick it up (due to attitude of the boat/tank and length/condition of the pick up tube)

redgoat · Jul 24, 2010

Re: tired of being towed

Had a similar problem with my boat. Determined that the engine compartment was not getting enough ventilation and caused a heat soak situation. Now I leave my blower motor on all the time my engine is running and have had good success. It's worth a try.

dj13 · Jul 25, 2010

Re: tired of being towed

it does the same thing whether the tank is full or 1/2 full or near empty. and yes i have tried leaving the blowers going and still no luck. thanks for the suggestions though

EddiePetty · Jul 25, 2010

Re: tired of being towed

dj13 said:
......until I let it set for about 45 minutes or so. The engine will the start and run about 50 yards and it will die and it will not start

....I still think you're runnung out of fuel. 45 minutes is a nice 'heat-soak' period. The float/needle is probably hanging closed. With a full float chamber the boat will probably "run about 50 yards and it will die "

Next time it happens, remove the flame arrestor and have someone pump the throttle. If no fuel squirts from the accelerator nozzles....you're outta fuel!!

dsmmace · Jul 25, 2010

Re: tired of being towed

I would put a fuel pressure regulator on and also test your oil pressure switch. Not the one for the gauge.

[OBC]Patch · Jul 25, 2010

Re: tired of being towed

visualy inspect choke operation during the crisis, with someones help. Maybe it's just needing adjustment.

elkhunter338 · Jul 25, 2010

Re: tired of being towed

fuel pressure gauge at the carb to monitor if you loose fuel pressure. That will help you trouble shoot the issue, then you can move the fuel pressure gauge and see where you are loosing fuel pressure.
Have you tried letting the engine idle for 5min before shut down to cool everything off. I have a starting issue with my boat if I do not let the manifold cool down.

tired of being towed

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