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  #16 (permalink)  
Old 06-18-2017
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Join Date: Dec 1969
Location: middle Texas coast
Posts: 9,804
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Is the rail pressure in spec?

too high and it could be rich on all cylinders.
maybe a leak , but you should be able to see that

or injector leaking by

Hopefully rodbolt will come on and give you some input

Last edited by 99yam40; 06-18-2017 at 08:30 PM.
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  #17 (permalink)  
Old 06-18-2017
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Join Date: Jan 2014
Location: Savannah GA
Posts: 2,624
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Is it using more fuel than it once did? How long have you owned it?

4000 lb boat dry weight? So maybe 5800lbs loaded?

Wonder what prop is on the motor? May not be ideal. What is your max rpm?
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