I've driven one of your type but never got into the wiring. There is a main switch in the cabin which when turned ON it supplies power to the toggle switches at the helm. If power comes from the key or the cabin it comes in on the Red/Purple to your switches
The ON/OFF at the helm should have...
Sounds like the float is stuck
Could get another pump and float (or all in one unit) and attach to a piece of aluminum flat stock. Bend the stock so it can be slid under the motor and attached to the stringer. This way it doesn't have to be removed
No clue, if ya remember I had one of the 3 wire ones on the HP transom assembly. Added the digital to analog converter just like it said and it never worked
Hope you have better luck
Looks are ok, but are they flat?
Take a framing square or other steel ruler and suck and see if they are flat. Might need to put a flat file across them to true them up
Being CATs there will be exhaust bank O2's as you mentioned.
The injectors need to be tested by someone that knows how to test. If they go to a auto place they may not test them at high rpm over time and high flow.
The best guy I know is an OSO member that goes by ArticFriends (Smitty). Or...
From what I find about the GXI is it does Batch firing of the injectors and has a single fuel rail. Don't see how a scanner can do a misfire or tell which bank has more or less fuel. Motors like the 8.1 can because individual coils and injector control
With the motor getting worst the more it...
While the drawing is a bit messy looking I think I'm understanding what your wanting to do. Looks like most are lights and with that all the grounds could be tied together and run separate hots to each (except red/green)
My rule of thumb has always been 2 pitch up from 4 to 3 blade, or 2 pitch down from 3 to 4 blade.
My motors are 250HP each and they should be able to reach 6K RPM but have had them a bit over 5K just for a few seconds but didn't want to push it just yet. There is plenty of power, I can be...
Shouldn't start a new thread with the same question, just repeat the question and might get more answers.
With your fuel pressure not up to spec look at the fuel pressure regulator, item 21 part 3858967...
Just discussing options
Current Props are 4-blade Revolution 14.6x19P both Left and Right hand, twin OB
Looked the props up and these are over $1K each and are stainless steel
Looking at others like Enertia ECO 3-blade 15x21 are X7 alloy and findings say they are 30% stronger then SS
Also...
