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no spark in cyl 1 2 and 3

jaybro72

jaybro72

Jetboaters Commander
Messages
195
Reaction score
153
Points
187
Location
st. Peters, MO
Boat Make
Yamaha
Year
2013
Boat Model
SX
Boat Length
19
I have insane spark in cyl 4, but thats it. swapped coils, new plugs and nothing. I do not have yds 2.0. any suggestions. thank you
 
David Martin

David Martin

Jet Boat Junkie
Messages
425
Reaction score
271
Points
137
Location
Punta Gorda
Boat Make
Yamaha
Year
2013
Boat Model
SX
Boat Length
24
Sounds like pick up coil............location behind drive shaft(for replacement) but you can check it with a voltage meter and ohm meter. You will need service manual(describes how to do this and gives you what voltage and ohm reading you should get. Now one of the first checks they call for in the service manual is check the ground wires in the pick up coil harness..........if the grounds are ok they move on to checking the coil itself.

Good luck
 
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