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is the idle timing in spec and does it show as it advances when throttled up. guessing does not help. check with a timing light

No fuel should be flowing thru the main jet into the motor during idle. as I said check to make sure the timing is advanceing as the extra fuel starts hitting the motor. or just tak it into a shop to let them fix it

what are you reading the voltage with?

hook up timing light to #1 plug wire and start motor, aim light at timing mark on flywheel.

The motor is bogging down, so you need to see if timing is in spec. do you know what a timing light is?

use a timing light to see what the timing is doing. make sure it is in spec and that it advances as you throttle up

do some reading on CDI troubleshooting. https://www.marineengine.com/parts/cdi-electronics-outboard-parts/outboard-ignition-troubleshooting/154/

I have never worked on a Suzuki, so no help on wires. but see if you can find a service manual with wiring diagrams for your motor. trace the wire from ignition switch to the start relay. find out where you get 12+ to and where it stops

testing should be done. measuring the peak voltages into and out of the CDI to see if they are in spec

I do not think there are any sockets for a relay to plug into. all are hard wired on these outboards

seems like he has replaced the relay twice, if you care to read what he wrote

if you can hear the relay operating when you hit each switch, then you are left with a bad battery cable or just a connection on either end of the + or - cable

charge coils, Pusar coils into CDI and then outputs to the ignition coils

testing inputs and out puts should tell you where to be looking

If someone turned it into a longer shaft, they had to install the spacer and replace the drive shaft. I myself never heard of a 2 piece drive shaft

most of the time a complete model # tells everyone what motor is being talked about

most boats have a boat side filter and the one on the outboard, just do not install a small micron filter in the boat side. get rid of the big stuff and water with the one in boat and let the motors filters handle the rest

but this thread is about a EFI motor

if you have problems with water, it may help to have another one bigger

yes it is a water separator, and should stay in place even if you put another on in the boat