HELP!! No fuel to FCC!

96 Sport Nautique GT-40.

So the boat runs fine then sputters and then dies and will not start. This happened a couple of days ago so I changed the fuel filter in the FCC and the boat ran great for about two hours. Now once again, dead in the water.

I pulled off the FCC cover and no fuel. I then pulled off the hose from the small pump below the FCC and it sputters a few drops of gas when we turn the key.

I then pulled out the back seat to expose the tank, when we turn the key there is no noise coming from the tank. I assume there is a pump in the tank.

So, is it the small pump below the FCC or the tank pump?

How do you replace the tank pump? Pull the tank out?

Where is the fuse for the tank pump?

Anything else I might be missing?

HELP. End of my only vacation of the year fast approaching!!!!

Mike

Experts should chime in soon but it sounds like the low pressure fuel pump, same thing happened on my Excalibur and that's what it was.

Thanks Lewy!!

I will be attacking these items today.

When I remove the anti-siphon valve does that free up the pick-up?

The LP pump makes noise and seems to be trying, we will see how it looks when I take it apart.

Is the LP pump a PCM part? Or can I get that at any auto parts store/boat store.

Thanks again Lewy.

Mike

So Lewy,

After yesterday's fiasco, I woke up this morning and went out to the boat and it started right up and ran perfect for 20 minutes until I shut it down.

So I am a bit confused as to why it ran perfect after dying the day before.

As a reminder, I have already sucked out every drop of gas from the winter and added fuel additives with a fresh tank of gas.

So I went ahead and took off the anti-siphone valve from the tank. (not the easiest task, since this this valve has been on there for 17 years!)

I also took off the LP pump and opened her up to see if there was any debris in the screen.

The anti-siphon valve was very sticky, so I went to a local marine shop 30 minutes away and bought a replacement valve. It was not the exact same replacement but close enough.

The LP pump had a considerable amount of debris so I cleaned that out.

We put the whole mess together, fired her up and she ran fine for almost two hours now. So we will see.

The last episode we had, she ran for three hours before repeating.

Wish me luck. And thanks again Lewy!!

BTW, my start issues from a previous thread was indeed the upper solenoid, just as Lewy said it was.

These forums are nice. A little slow sometimes, but very nice. Thanks

Mike

If the pump runs the relay is OK. Jumpering the STO when the problem occurs is a good way to test the relays.

Just wondering if your problem is fixed. I have a similar problem. I have changed the filter and that did not work. I have now replaced the relay and am waiting to get to the lake. I don't think that is it.

Thanks for the reply. I will try the relay this weekend. If that doesn't work I think I will go ahead and replace the LP pump. I guess if I replace everything, it will eventually be fixed...lol

jungle wrote: Hey guys, have a 2000 GT 40, and the fuel pump breaker pops after about 15 to 20 seconds of running. Do the breakers get weak, or is it telling me that the LP pump or the HP pump is bad??

Yes disconnect one at a time to see which pump is causing the excessive current flow.