Fuel Pump !

Chaney101

Petty Officer 3rd Class
Joined
Jan 31, 2007
Messages
91
Could my fuel pump be causing my issue with not getting over 4000 rpm? Fine under no load. When I try to get up and go in the water it takes forever and only gets to 4K? Spark checked out fine.
 

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: Fuel Pump !

i think a compression check is called for immediately.
 

BigDaddy300

Cadet
Joined
Apr 11, 2007
Messages
18
Re: Fuel Pump !

If pumping the bulb when it acts up makes it run fine, what would the possible problems be?
 

Chaney101

Petty Officer 3rd Class
Joined
Jan 31, 2007
Messages
91
Re: Fuel Pump !

all three cylinders checked out at about 114 PSI
 

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: Fuel Pump !

i would like to see higher, but they are even. is it firing on all cylinders? take an induction timing light with you. connect to battery as usual, then clip it on a plug wire. have another person drive, watch the timing light while you try to get on plane. watch for intermittent, or strange flash, then repeat on the next wire, and so on. this is the only way to check spark under load. if all is well it will rule out the electrical.
 
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