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 2015 37hp efi fuel pump 
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MMT Member

Joined: Mon Jul 04, 2016 7:14 am
Posts: 7
Post 2015 37hp efi fuel pump
2015 37 hp efi starts and idles good but when I get on the step and run for a short time rpms drop off and it stops. Think its probably the high pressure pump although when I turn on the start key I can hear the pump running . Wonder if anyone has taken one of these pumps apart and tried to fix it? This is the high pressure pump on top of the engine.


Sat Sep 05, 2020 9:39 am
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MMT 1000 Club

Joined: Mon Dec 31, 2012 11:07 pm
Posts: 4820
Location: West Monroe, LA
Post Re: 2015 37hp efi fuel pump
It's also possible the high pressure pump is fine but the low pressure isn't feeding the high and it's running out. Pump the bulb and see if it helps.

#CFFITR
#mudmotor>physics


Sat Sep 05, 2020 1:07 pm
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MMT Member

Joined: Mon Jul 04, 2016 7:14 am
Posts: 7
Post Re: 2015 37hp efi fuel pump
Thanks Russ Ill give it a try, do you know if the low pressure pump runs all the time supplying the hp pump?


Sat Sep 05, 2020 2:39 pm
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MMT Member

Joined: Mon Jul 04, 2016 7:14 am
Posts: 7
Post Re: 2015 37hp efi fuel pump
Just got my boat back from the good people at GT and the fuel line was the problem. The inner lining of the fuel hose had become detached and collapsed under pressure from the LP pump. This was the original hose that came with the boat when purchased in Sept 2015.


Fri Sep 11, 2020 1:53 pm
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