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2002 150 cylinders missing

E

Ed Ramsey

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i have a 2002 150. Took it out

i have a 2002 150. Took it out to fish this weekend and it ran badddd. Did some testing and found the right three cylinders weren't firing. Any ideas?
 
"What kind of motor is it?? ou

"What kind of motor is it?? outboard model?? 4 or 2 stroke?

Yamaha Rocks, there is no distributor cap on a yamaha outboard."
 
2 stroke 6 cylinder no spark o

2 stroke 6 cylinder no spark on right three cylinders
 
"plug the dva into the dvom

"plug the dva into the dvom

you will have 3 triggers
you need to test volts, should be over .7 d/c volts
the coils input will be over 100 d/c volts



test coil ohms
primary, wire to wire should be less than 1 ohm


do you have the factory manual?"
 
"Where are the triggers locate

"Where are the triggers located? What do thy look like? I swapped coils between top left and top right, and determined that both coils (and plug wires and plugs) are functional on one side, but not the other. That is why I'm currently focusing on the triggers."
 
"JIT, Thanks for the advice.

"JIT, Thanks for the advice. Sort of like when a guide friend suggested I get a bigger boat in the presence of my wife. Just what I wanted her to hear. If your on Lake Fork sometime, drop a line. Ron"
 
the wires are white with black

the wires are white with black/red/blue tracers

you might need a test harness

if you go to yami web page and get the LIT#
i might have the manual for you
 
"I'll check this weekend w

"I'll check this weekend when I've got access to the engine model and serial #. I'm going to try measuring resistance of the ignition coils primary and secondary circuits (looking for an open), and plan on opening the electronics cabinet to reseat computer and initiator connectors. I'll keep you appraised."
 
"JIT, Model is VZ150TLRZ (

"JIT, Model is VZ150TLRZ (2001 model year)

Lit # for factory service manual is LIT-18616-02-10
There is also a supplement LIT-18616-02-22"
 
Pulser coil output peak voltag

Pulser coil output peak voltage
White/red (W/R) – Black (B)
White/black (W/B) – Black (B)
White/yellow (W/Y) – Black (B)
White/green (W/G) – Black (B)
White/blue (W/L) – Black (B)
White/brown (W/Br) – Black (B)

5 volts cranking
 
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