Sunken Glastron GT-150

78 GT-150

Petty Officer 3rd Class
Joined
Jul 18, 2009
Messages
79
Here is what I went out to today!

http://www.youtube.com/watch?v=XX0I1T94ddI

Everything is fine, but when it runs now you can't grab the throttle/shifter without getting shocked. It feels like spark plug voltage! Any ideas what to look at?

Motor is a 1986 Merc 90hp

Thanks guys!
 

j_martin

Admiral
Joined
Sep 22, 2006
Messages
7,474
Re: Sunken Glastron GT-150

Kill circuit is leaking to ground, across the ignition switch or kill switch. Somehow the frame ground is off the controls. It should be grounded firmly to the engine frame through the harness.

hope it helps
John
 

78 GT-150

Petty Officer 3rd Class
Joined
Jul 18, 2009
Messages
79
Re: Sunken Glastron GT-150

Kill circuit is leaking to ground, across the ignition switch or kill switch. Somehow the frame ground is off the controls. It should be grounded firmly to the engine frame through the harness.

hope it helps
John

Do you think it is because it's wet? Or do I have a short?

All comments welcome.

Thanks,
 

daveswaves

Ensign
Joined
Mar 22, 2002
Messages
901
Re: Sunken Glastron GT-150

Dont forget to drain the fuel tank, if the vent was open you have water in it.
 

78 GT-150

Petty Officer 3rd Class
Joined
Jul 18, 2009
Messages
79
Re: Sunken Glastron GT-150

Luckily it was empty and was actully helping to keep the boat from completly sinking. Like a big red bobber! lol
 

j_martin

Admiral
Joined
Sep 22, 2006
Messages
7,474
Re: Sunken Glastron GT-150

Do you think it is because it's wet? Or do I have a short?

All comments welcome.

Thanks,

Probably just moisture on/in the switches. Should be making the engine mis-behave, instead of the driver. Ground is off on the control set.

A day or 2 in the sun should take care of the short. The ground problem is a wiring fault.

hope it helps
John
 

ozzgood2001

Petty Officer 2nd Class
Joined
Jun 22, 2009
Messages
112
Re: Sunken Glastron GT-150

no automatic bilge????? dude it rained all morning!! wowser!
 

78 GT-150

Petty Officer 3rd Class
Joined
Jul 18, 2009
Messages
79
Re: Sunken Glastron GT-150

Probably just moisture on/in the switches. Should be making the engine mis-behave, instead of the driver. Ground is off on the control set.

A day or 2 in the sun should take care of the short. The ground problem is a wiring fault.

hope it helps
John
So I should have a ground wire running from the control box (Throttle/shifter) to a ground? Sorry I am a newb! Before the boat sunk, I had intermittent tachometer problems, but if I wiggled the wiring harness (out of the box toward the gauges) the tach would work again.

I know I have a short, but could that cause the shock to my hand? The shock feels more like 110 A/C. I thought at first it was D/C voltage coming from the plugs, but the "shock" is too fast. It feels just like lighting yourself up from household wiring. More like a "Buzz" than a "Series of Shocks" like an ignition would do. (I have been popped a few times from bad plug wires on my car, but then again it is a 4 stroke, so it probably would be different on a 2 stroke) But the more the boat dries out, the lesser the shock seems to be.

no automatic bilge????? dude it rained all morning!! wowser!
I had an automatic pump, but I think it bit the big one!

I had an old "800" pump that was sitting in the gunwale, but it was unhooked after I wired up the automatic. Once the 800 was hooked BACK-up and tossed in the back, it worked like a champ for 2 hours to drain it out! (The pump, plus a lot of buckets lol)


Just as a funny coincidence, we have the same name and last initial, plus we are from about the same area... My last name is Gibbs and I grew up in Willamston... Too Funny.
 

Karl_Childers

Petty Officer 2nd Class
Joined
Mar 2, 2009
Messages
118
Re: Sunken Glastron GT-150

Been there, done that and got a PhD in raising swamped boats. The beautiful thing about 2 strokes is if you drain em out, clean the carbs and change the plugs, they are usually fine after a short swim.
 

j_martin

Admiral
Joined
Sep 22, 2006
Messages
7,474
Re: Sunken Glastron GT-150

The kill wire is to the electronics, but there's some pretty high voltage pulses on it. It's about like the primary coil wire on an old car. The kill circuit shorts it to ground, disabling the ignition.

I would bet the ground connection to the controls is faulty. It comes through the harness from the engine.

2 cycle and 4 cycle both take the same sort of spark to fire.

hope it helps
John
 

78 GT-150

Petty Officer 3rd Class
Joined
Jul 18, 2009
Messages
79
Re: Sunken Glastron GT-150

The kill wire is to the electronics, but there's some pretty high voltage pulses on it. It's about like the primary coil wire on an old car. The kill circuit shorts it to ground, disabling the ignition.

I would bet the ground connection to the controls is faulty. It comes through the harness from the engine.

2 cycle and 4 cycle both take the same sort of spark to fire.

hope it helps
John

OK I will check it out! It makes total sense what you are saying!

I know the spark is the same from 2-4 strokes, I just meant the frequency of the pulse. I thought it would be faster in a 2 stroke. :D
 

Bifflefan

Commander
Joined
May 27, 2009
Messages
2,933
Re: Sunken Glastron GT-150

Where was your cover?
It's Michign, the only thing you can count on is rain (snow) when you want it the least...
 

78 GT-150

Petty Officer 3rd Class
Joined
Jul 18, 2009
Messages
79
Re: Sunken Glastron GT-150

In the box!!! It's on the boat now! lol
 

quebec#1

Petty Officer 1st Class
Joined
Apr 17, 2004
Messages
226
Re: Sunken Glastron GT-150

Here is what I went out to today!

http://www.youtube.com/watch?v=XX0I1T94ddI

Everything is fine, but when it runs now you can't grab the throttle/shifter without getting shocked. It feels like spark plug voltage! Any ideas what to look at?

Motor is a 1986 Merc 90hp

Thanks guys!
Engine should be fine it looked like it didnt go completly under but the worse thing that got my GT was that all the rear foam in the back and the transom got saturated and made the boat weight alot more.
I used a sump pump to get mine to float again.
 

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green4themoney

Petty Officer 1st Class
Joined
Jul 21, 2004
Messages
318
Re: Sunken Glastron GT-150

yeah that really sucks did you ever find out how it sunk? and a brown band merc too... those r my fave!
 

scipper77

Commander
Joined
Sep 30, 2008
Messages
2,106
Re: Sunken Glastron GT-150

Would it be better to dock the boat with the bow facing out?? I know you are supposed to anchor at the bow as opposed to the stern.

Also, how much motor is that boat rated for? A little wet foam plus a heavy motor... I just wouldn't want to see this happen again, I'm not trying to find fault.
 

78 GT-150

Petty Officer 3rd Class
Joined
Jul 18, 2009
Messages
79
Re: Sunken Glastron GT-150

yeah that really sucks did you ever find out how it sunk? and a brown band merc too... those r my fave!
I believe it sunk because the waves crashed over the back and just flooded it.
Would it be better to dock the boat with the bow facing out?? I know you are supposed to anchor at the bow as opposed to the stern.

Also, how much motor is that boat rated for? A little wet foam plus a heavy motor... I just wouldn't want to see this happen again, I'm not trying to find fault.

The water where I'm docked is too shallow to dock bow out. The skeg stabs the ground.

The boat is rated for 90hp max and that's what's on it. I have heard of guys running 150 and 175 motors on these.
 
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