Boats For Sale:
GT-40 Troubles |
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1998Nautique 
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Joined: January-26-2006 Location: Canada Status: Offline Points: 190 |
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 Topic: GT-40 TroublesPosted: December-07-2007 at 1:51am |
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I have a 98 Nautique GT-40 EFI. And when I let it sit in the water and rock in the waves. I have a hard time restarting it, it turns over lots before it starts. Any ideas would be greatly appreciated.
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79nautique
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Joined: January-27-2004 Location: United States Status: Offline Points: 7872 |
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Posted: December-07-2007 at 11:22am |
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shouldn't make a difference unless your low on fuel.
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87BFN owner
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Joined: August-25-2006 Location: Ypsilanti, MI Status: Offline Points: 2194 |
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Posted: December-07-2007 at 6:34pm |
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It sounds like it's waiting on gas. I would take a look at the fuel pump. Check the wiring connections and make sure it is operating correctly.
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79nautique
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Posted: December-07-2007 at 6:55pm |
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are you pumping the throttle before you try starting it when it cranks a lot before starting? if so then your flooding the motor and that's why it is hard to start.
Does your motor have the pro-tec ignition? |
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TRBenj
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Joined: June-29-2005 Location: NWCT Status: Offline Points: 21123 |
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Posted: December-07-2007 at 7:16pm |
He's got the GT40 multiport motor. |
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1998Nautique
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Posted: December-09-2007 at 9:05pm |
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If the boat is on the lift it starts every time. Only when sitting in the water and rocking in the waves. I have a new LPP. Should I try the high pressure pump.
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BuffaloBFN
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Joined: June-24-2007 Location: Gainesville,GA Status: Offline Points: 6094 |
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Posted: December-09-2007 at 9:10pm |
Is the boat ever warmed up when you start it on the lift? The lift can't really make much difference that I can think of. Maybe you're associating another condition with the lift? |
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79nautique
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Posted: December-09-2007 at 11:16pm |
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i betting it's an issue with the choke and it only happens when it hot. Let is sit in the water rocking for an hour or so and I bet it fires right up.
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1998Nautique
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Posted: December-10-2007 at 1:05am |
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It is an EFI.
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1998Nautique
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Posted: December-10-2007 at 1:06am |
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Only when the boat rocks in the waves i have trouble.
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79nautique
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Posted: December-10-2007 at 11:05am |
still has a choke circuit not like the carb set up but still functions in the same matter, so clean the carbon out of it and make sure the solenoids are working correctly. |
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79nautique
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Posted: December-10-2007 at 11:08am |
so is the motor hot or cold when this occurs? Rocking the boat makes no difference unless your low on gas or have a bad pick-up in the tank so that it sucks air instead of gas that is the only possible cause unless you have loose parts on the motor. |
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1998Nautique
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Posted: December-10-2007 at 11:15am |
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Where is the pick up in the tank? Seems like it takes a while to get fuel to the motor. But if I have my boat on the lift out of the water, instead of ties to a buoy. It will start all the time right away as I lower the lift into the water. If I have it tied to the buoy it takes a whilel to start.
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79nautique
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Posted: December-10-2007 at 11:57am |
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so this occurs when the motor is cold? and doesn't happen when hot?
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boat dr
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Posted: December-10-2007 at 12:38pm |
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Seems that it starts fine in the boat lift, there is an easy solution to the problem.
Dont start it on the lake!!!!! |
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eric lavine
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Joined: August-13-2006 Location: United States Status: Offline Points: 13413 |
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Posted: December-10-2007 at 12:42pm |
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what are the angles of the boat when in the lift and in the water?
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"the things you own will start to own you"
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bchesley
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Posted: December-10-2007 at 1:24pm |
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I am just wondering if there is any way that the fuel is somehow being leaked back through the low pressure pump into the tank from wave action. It is not going to start if the FCC is not full of fuel.
Brad |
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2001 SAN
"Python Powered" |
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boat dr
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Posted: December-10-2007 at 1:37pm |
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The FCC or "vapor canister" should not be able to "siphon fuel back to the tank".Most are set up with a float and needle valve to allow fuel in only.
You do have an "Anti- Siphon" valve at the tank.Has this been checked?Even if the fuel line was empty, the motor or fuel system would have a supply of fuel from the FCC. At least enough to crank,there should be a drain at the bottom of the FCC have you checked to see if it is full?????? |
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1998Nautique
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Posted: December-10-2007 at 9:58pm |
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The engine cranks about 6 times before it will start in the water. Seem like it is Siphoning out as it rocks.
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79nautique wrote: