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PCM 1998 GT40 engine problem
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mmandre7 View Drop Down
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    Posted: August-17-2008 at 3:13pm
Hi guys,

I am new to this forum and I come in desperate desperate mode. I have been running an Air Nautique for quite some time but recently, it ended up under water for a few hours...

The boat obviously running condition was significantly affected. We did change a few components to fix the problem such as transmission, electronic box... but now we still have some major issues to make it run properly.

In iddle or reverse, the engine goes high in RPM but in forward gear, the engine significantly lack power (roughly 60% of total power). There are no correct craft local dealer in the region and all mechanics who looked at it can't figure out the problem. ANY INPUT IS GREATLY GREATLY APPRECIATED.

THanks in advance
Mehdi
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eric lavine View Drop Down
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Points: 13413 		Post Options Post Options   Thanks (0) Thanks(0)   Quote eric lavine Quote  Post ReplyReply Direct Link To This Post Posted: August-17-2008 at 6:57pm
what do you think it may be? fuel related? electronic related? what does it seem?
"the things you own will start to own you"
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mmandre7 View Drop Down
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Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mmandre7 Quote  Post ReplyReply Direct Link To This Post Posted: August-17-2008 at 7:39pm
I don't think it is fuel, we checked and all seems right in that regards. I suspects electronics...
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BuffaloBFN View Drop Down
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Points: 6094 		Post Options Post Options   Thanks (0) Thanks(0)   Quote BuffaloBFN Quote  Post ReplyReply Direct Link To This Post Posted: August-17-2008 at 10:42pm
Are we talking a little water over the floor or sunk? What happened?

And welcome aboard!
1988 BFN-sold



"It's a Livin' Thing...What a Terrible Thing to Lose" ELO
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backfoot100 View Drop Down
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What engine is in this?
When people run down to the lake to see what's making that noise, you've succeeded.



Eddie
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backfoot100 View Drop Down
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Originally posted by backfoot100 backfoot100 wrote:

What engine is in this?


OOP's. Just read the title again.

Depending how wet this thing got, it could be any number of different things. There have been numerous posts about the high pressure and low pressure pumps in these motors that are suseptable to failure. Of course, that's with electronics that haven't been flooded that can compound the problem.
When people run down to the lake to see what's making that noise, you've succeeded.



Eddie
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backfoot100 View Drop Down
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Points: 1897 		Post Options Post Options   Thanks (0) Thanks(0)   Quote backfoot100 Quote  Post ReplyReply Direct Link To This Post Posted: August-18-2008 at 12:54pm
If you're in Morocco is it safe to assume that this was also salt water flooding?
When people run down to the lake to see what's making that noise, you've succeeded.



Eddie
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79nautique View Drop Down
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Points: 7872 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 79nautique Quote  Post ReplyReply Direct Link To This Post Posted: August-18-2008 at 1:12pm
sounds like it spent some time completely under water and that's not good for any of the sensors on a computer controlled motor, why replace the tranny, should have flushed it along with the motor.
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eric lavine View Drop Down
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Points: 13413 		Post Options Post Options   Thanks (0) Thanks(0)   Quote eric lavine Quote  Post ReplyReply Direct Link To This Post Posted: August-18-2008 at 3:59pm
in a couple years time with salt water you can cut into a wire 6ft. up and you will find green corrosion, it will creep up the wires
"the things you own will start to own you"
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mmandre7 View Drop Down
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Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mmandre7 Quote  Post ReplyReply Direct Link To This Post Posted: August-19-2008 at 9:19pm
that s correct, it was salt water and the boat was completely under water ^for a few hours
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