I have a john deere LX178. with kawasaki FD440V ( Vtwin ) Only one coil will fire, if i switch the coils still just the one side will fire. so i know the coils and resistors are good. i am thinking pick up coils? any help would be appreciated.
John Deere Lx178 Only One Coil Fires.
Posted August 04, 2013 - 03:36 PM
- JRJ said thank you
Posted August 04, 2013 - 04:19 PM
It would almost have to be a pickup coil, or break in a wire on that side. Only way to know for sure is to switch out the pickups.
Posted August 30, 2013 - 06:25 PM
Just so everyone knows. It was the Ignitor box causing the problem
- Alc said thank you
Posted September 14, 2013 - 07:25 PM
This is what it came down to. I had a weak poor running engine. i pulled the spark plug wire on left side the engine would STOP. If i pulled the spark plug wire on the right i noticed no differnce at all. So first i pulled to valve cover to make sure i did not have bent push rod or broken rocker arm. Cranked the engine over and watched the valve train work. Next i switched ignition coils. By switching the ignition coils did two things. Tested the suspected bad coil and comfirmed that it was isolated to the right side. next i measured Ohms of the pickup coils. Then i spun the engine over and set my voltmeter to AC scale and measured the AC current from the pick up coils. Baiscly i made sure the ohms and AC voltage was the same or very close. It ended up being the ignitor box. i paid dearly for the ignitor box but also learned how to diagnose a more complex ignition system. and i hope this post helps somone else do the same.
Edited by Rocking416, September 14, 2013 - 07:33 PM.