Jump to content

Vote for Tractor of the Month
Garden Tractors and Parts on eBay

- - - - -

Honda GXV620

weak spark

  • Please log in to reply
4 replies to this topic

#1 inthehollar OFFLINE  

  • Member
  • Member No: 84978
  • 0 Thanks
  • 1 posts
  • Location: Big Cabin, Ok

Posted October 19, 2016 - 10:36 AM

Can anyone help me? I have a Hustler Fastrk z with a Honda GXV620 on it. I cannot get a strong spark on either plug.


I have done the following - new coils, new plugs, new plug caps, new rectifier, unhooked every kill switch on it and swapped the coils from cylinder to cylinder and then back again. I cannot get a good spark on either plug. I can get a spark testing light to light up but still a very weak spark at the plug.


Can the kill switch diode cause issues with a weak spark? I have unhooked the wires to the coil from the diode and still nothing.


Does the kill diode have to be hooked up and working properly to get proper spark?


I am beyond irritated!

#2 jms180 OFFLINE  



  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 1266
  • 860 Thanks
  • 1,154 posts
  • Location: Harvest Alabama

Posted October 19, 2016 - 12:59 PM

Robert@Honda can help. He usually hangs out at LawnWorld

#3 glgrumpy ONLINE  


    Getting Out!

  • Senior Member
  • -GTt Supporter-
  • Member No: 8360
  • 6,499 Thanks
  • 6,370 posts
  • Location: Huntington, IN 46750 North East in State

Posted October 20, 2016 - 08:04 AM

Is there an oil  pressure sensor on these engines?  Maybe it is bad or wire off, or low oil?   Only had little honda 4hp's myself, they had that switch.

#4 massey driver ONLINE  

massey driver

  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 75
  • 1,055 Thanks
  • 1,436 posts
  • Location: Mainitoba Canada

Posted October 20, 2016 - 08:55 AM

When you say new coils , did you buy them new or are you talking about a used coil. The new coils come with the ign wire but not the caps if I remeber correctly.I had a 20hp v twin one time and it used to eat coils for some reason. The coils are on the outside of the flywheel and are always live.They need a ground to kill them. If you've disconneted all the wire's that run to the coils you should have good spark..

This maybe off the mark but does this mower have a electric clutch on it. The electric clutch can and will ground out the ign if its shorted.Try disconnecting the wire to the electric clutch to see if it will run.

#5 Delmar OFFLINE  

  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 5039
  • 2,255 Thanks
  • 2,381 posts
  • Location: west central missouri

Posted October 20, 2016 - 04:11 PM

checked the ground wire/grounding on it yet?