CDI unit voltage

[Alwischy]

Hi guys i have a 60hp 2 stroke 2002/3
With the battery voltage at 12.5 volts what should the supply voltage to the CDI unit be ?

[rodbolt17]

o v.
the CDI on that motor does not receive battery voltage.
are you having an issue?

[99yam40]

Battery voltage has no bearing on charge coil peak voltage.

charge coil is what sends voltage to CDI for spark
Lighting coil is what sends voltage to a battery

[Alwischy]

Thanks for the reply guys
I have been having intermittent running issues for some time and clutching at straws now, i took it out last week for a few hours and although it was bogging down a bit it was ok.
So when i got back and was looking at the carbs and found no 2 carb had a tiny split in the fuel hose so i replaced the 30mm length of pipe and when i took it out the following week it ran like shit,would start and run ok on idle but as soon as i throttled up the engine just cut ggggrrrrrrrr.
I am a car technician by trade but 2 strokes are the devil for me.

Compression's are 130psi across all 3 cylinders
The spark appears to be good on all 3 (but not the same as a car)
Fuel tank & line new
Fuel pump diapgram checked all ok
Checked resistance on all sensors against yamaha specs all ok
And i can strip & reassemble all 3 carbs faster then an AK47 LOL
My gut instinct says its a carb issue

[99yam40]

A slit on the pressure side of pump will cause a leak not suck air in.

sounds like you still have a problem with the carbs

compression, spark, timing, and fuel pressure/vacuum are all easy to test.
if all of that is good them you have problems with fuel to air ratio.
either a vacuum leak between carbs and intake or carb jets.passages are plugged

[Alwischy]

Yeh i agree it has to be carbs,i will put a video up when i get back from my summer holiday as the sound helps a lot.
Do you guys have any you tube links or how too of setting up the float height in the carbs so that i know for deffo i have set them correctly ?.

[walleye1]

Install the needle and float, tip the carb up where the the
float is pushing the needle down, the float should be level
with the bowl matting surface.

[ausnoelm]

Yeh i agree it has to be carbs,i will put a video up when i get back from my summer holiday as the sound helps a lot.
Do you guys have any you tube links or how too of setting up the float height in the carbs so that i know for deffo i have set them correctly ?.

Cleaning them properly is most important.