Yamaha Outboard Parts
Yamaha   Yamaha Outboard Parts
Yamaha Outboard Forum Yamaha Outboard Parts Discussion Forum Yamaha Outboard Parts Boat Parts Yamaha Outboard Forum Outboard Motor Parts Contact Us
Yamaha Parts
  #16 (permalink)  
Old 06-18-2017
Senior Member
Join Date: Dec 1969
Location: middle Texas coast
Posts: 9,804

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.
Reply With Quote
  #17 (permalink)  
Old 06-18-2017
Senior Member
Join Date: Jan 2014
Location: Savannah GA
Posts: 2,624

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?
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 01:02 AM.

Outboard Parts

Other Forums
Mercury Parts
Suzuki Parts
Evinrude Parts
Johnson Parts
Honda Parts

Copyright 2000 - 2017, Outdoor Network LLC