Dam it not again

[steplift20]

It's not a fuel issue definitely electrical , the way she was running definitely electrical. What motor do you have?

[phatdaddy]

Go to harbor freight and pick up a fire fly type spark plug tester, less than 5 bucks

https://www.harborfreight.com/90-in-...ker-63593.html

Run it on the hose to see if it’s firing on all cylinders

Is your tach acting wacky

[RWilson2526]

I should probably start a new thread so not to hijack this one. but yes as I was playing around with fuel lines and such the tach would read zero at times and work normally at others

[RWilson2526]

Originally Posted by steplift20

It's not a fuel issue definitely electrical , the way she was running definitely electrical. What motor do you have?

1986 Yamaha 150

[steplift20]

Tach was good, I had the stator replaced 2 years ago along with the trigger but I have had issues with my stators,
I must have had them replaced 5 times and one within a year. Can a switch box be tested?

[phatdaddy]

Only way i know is to swap it and if problem goes to other 3 plugs, its a bad box..

Also if you replace one, might as well do both

[steplift20]

Yes phat but does the stator fire three plugs on one side what I mean if I'm losing three plugs on one side I know it could be a switch box but can a stator do the same thing?

[phatdaddy]

I am not a mechanic, but the way i understand it, if your motor is charging, your stator is working.

The switch boxes are like a distributor on a car, sends the fire to the right plug at the right time.

Have u determined that it is only hitting on 3 cylinders?

[steplift20]

Thanks phat, one more question, I have seen switch boxes on Amazon,2 for 59,00 but they have a ground wire and I think mine are grounded to the block when you install them so I am Leary about getting them cause they have a ground wire and the Mercury ones do not have a ground wire ,it's grounded to the block when installed, what do you think?
The ones on Amazon are from CDI.