OZ ATV :: The Australian ATV Forum

[Sharky1]

Is anyone familiar with htis quad that can suggest where to start looking?

Plug is fine. Battery is fine.

This quad has been dying for a while now. It's losing compression & uses a lot of oil. At high RPM/full throttle it coughs & farts, especially over bumpy surfaces. I put it down to dirt in the carb but now I'm wondering if it's electrical.

I pulled the plug & held it against the motor to test it & when i did this, something shorted out & sparked near the battery. After that it wouldn't crank over. I disconnected battery & reconnected & now it cranks but no spark.

I have tested the plug in my Husqvarna & it's fine. I also tried a good plug in the TRX & nothing.

I'm going to rebuild this motor but regardless of this it needs a spark.

I don't know where to start. It could be anything from a broken wire to faulty ign module, kill switch, coil, lead, magneto, stator, bad earth etc

Any help appreciated

[driftingbanshee]

Sharky1 wrote:

Is anyone familiar with htis quad that can suggest where to start looking? Plug is fine. Battery is fine. This quad has been dying for a while now. It's losing compression & uses a lot of oil. At high RPM/full throttle it coughs & farts, especially over bumpy surfaces. I put it down to dirt in the carb but now I'm wondering if it's electrical. I pulled the plug & held it against the motor to test it & when i did this, something shorted out & sparked near the battery. After that it wouldn't crank over. I disconnected battery & reconnected & now it cranks but no spark. I have tested the plug in my Husqvarna & it's fine. I also tried a good plug in the TRX & nothing. I'm going to rebuild this motor but regardless of this it needs a spark. I don't know where to start. It could be anything from a broken wire to faulty ign module, kill switch, coil, lead, magneto, stator, bad earth etc Any help appreciated

process of elimination. by pass the ignition module and see if it cranks. Its unlikely to be this however

check the coil, magneto and stator as a first point as its not likely to be the lead. As its an easy thing to replace however it may pay to replace that first