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 Absolutely at a loss! 23hp GDLT engine troubles 
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Post Absolutely at a loss! 23hp GDLT engine troubles
I’ve gone through the carb, changed the coils, changed spark plugs, fresh oil, fresh gas, new fuel line, new fuel filter, compression and leakdown tests are good, valve lash is set and STILL, when I lower the prop into the water under any type of load the motor dies. I can give the motor half throttle and when I drop the prop into the water, the motor just dies. The only way for me to get the motor to run is if I let it idle in the water for 3-4 minutes then SLOWLY give the motor throttle a little at a time. Even then, when I get to wide open throttle in the water, I’m only at 3100 rpms. Really at a loss, I’ve done everything I know to do.

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Mon Dec 25, 2017 5:06 pm
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Post Re: Absolutely at a loss! 23hp GDLT engine troubles
Carb/gov linkage out of whack? Just guessing because it seems like you covered everything else. I had a 23 that did something similar and it ended up being a head gasket, but the leak down test showed that.


Mon Dec 25, 2017 6:12 pm
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Post Re: Absolutely at a loss! 23hp GDLT engine troubles

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Mon Dec 25, 2017 7:42 pm
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Post Re: Absolutely at a loss! 23hp GDLT engine troubles
Have you made sure valves aren't too tight and that there is full cam lobe lift?


Mon Dec 25, 2017 9:34 pm
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Post Re: Absolutely at a loss! 23hp GDLT engine troubles
Timing key? Seems like it's something easy starring at you


Mon Dec 25, 2017 9:45 pm
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Post Re: Absolutely at a loss! 23hp GDLT engine troubles

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Tue Dec 26, 2017 5:33 am
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Post Re: Absolutely at a loss! 23hp GDLT engine troubles
You can watch the rockers for how far they open the valves. Just make sure they all look like they open the valves about the same distance. Timing key is an easy check. You video this one yet? Also extra long shot.... spring came off cam decompression arm leaving it engaged... after all this bs I hope it's just a fuel line or something easy


Tue Dec 26, 2017 9:38 am
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Post Re: Absolutely at a loss! 23hp GDLT engine troubles

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Tue Dec 26, 2017 9:44 am
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Post Re: Absolutely at a loss! 23hp GDLT engine troubles
Starving for fuel "vacuum leak"...


Tue Dec 26, 2017 9:51 am
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Post Re: Absolutely at a loss! 23hp GDLT engine troubles
But if I slowly ease into the throttle, 25% of the time it will get up and run, then max out at about 3100 rpms
I’ll double check all hoses

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Tue Dec 26, 2017 10:41 am
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Post Re: Absolutely at a loss! 23hp GDLT engine troubles
You don't have too much oil in it do ya?

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Thu Dec 28, 2017 8:50 pm
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Post Re: Absolutely at a loss! 23hp GDLT engine troubles

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Fri Dec 29, 2017 2:50 am
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Post Re: Absolutely at a loss! 23hp GDLT engine troubles
Been following this, any solution yet?

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Sat Dec 30, 2017 9:12 am
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Post Re: Absolutely at a loss! 23hp GDLT engine troubles

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Sat Dec 30, 2017 9:16 am
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Post Re: Absolutely at a loss! 23hp GDLT engine troubles
That's because when you came up, I got a but of my starter luck on you.

#CFFITR
#TheGhostBoat
#whoneedsphysicsihaveamudmotor


Sat Dec 30, 2017 10:53 am
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Post Re: Absolutely at a loss! 23hp GDLT engine troubles
Might have already been checked but are your spark plugs/coils firing correctly? These twins will run on one cylinder, poorly, but will run.

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Wed Jan 10, 2018 10:09 am
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Post Re: Absolutely at a loss! 23hp GDLT engine troubles

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Wed Jan 10, 2018 10:31 am
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Post Re: Absolutely at a loss! 23hp GDLT engine troubles
Gasoline with ethanol sucks. I pay a little extra for fuel without ethanol to keep in items I don't use regularly. Still use seafoam also.

Glad you are making progress.

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Wed Jan 10, 2018 11:12 am
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Post Re: Absolutely at a loss! 23hp GDLT engine troubles
Search all the threads on "fuel solenoid" problems....

viewtopic.php?f=6&t=71094&p=932799&hilit=fuel+solenoid#p932799

It restricts fuel flow when you shutoff to help eliminate backfire - etc....

When they act up they give symptoms like yours - replace it !

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Fri Jan 12, 2018 11:13 pm
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