r/enduro • u/Erikukene • 2d ago

Help needed again

Hello! A few months ago my beta rr 300 2018 lost spark. New stator, ignition coil, sparkplug. Pickup sensor tested with an led. I gabe the old cdi to a guy with 2019 300rr and his bike didnt start. Just ordered a new cdi and tested. Still no spark. How could it be possible? Has anyone had similar problems or know anything. Any advice is appriciated.

Original post https://www.reddit.com/r/enduro/s/htEhj1xj6Z

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u/Lonewoodsman2023 1d ago

Spark plug wire and boot?

1

u/Lonewoodsman2023 1d ago

Short in the kill switch?

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u/Erikukene 1d ago

Killswitch okay

1

u/ta5036 1d ago

I don’t have a beta yet— about to buy a 26 390 rs. So I’m invested in this a little.

It’s interesting your cdi made someone else’s bike not start— are they for sure compatible to begin with?

The new cdi installed and your bike still not starting— doesn’t rule out there could be multiple issues.

I just chased a problem on my 2019 fe450 for months— it’d start and idle fine, then sputter and die with a quick throttle snap.

Ultimately it was a fuel pump. I tested fuel injector, fuses, ground, wiring, battery (apparently the battery is used on these bikes to send voltage with a throttle snap— not just the stator- according to the internet at least.) there was a video of a shop w the same issue and they condemned the fuel injector— despite it testing ok— said that was the fix. Not for me. In the process, I realized my lithium battery was defective, my injector was in range— but barely, and finally, my fuel pump internal plumbing was cracked.

Long way to say— you may have a couple things going on. Frustrating as hell, but keep at it.

When you say no spark— did it die on you while running? Or was it fine one day and then just didn’t work another?

1

u/Odd_Slip_857 1d ago

Check the stator, look up the manual for resistance specs from pole(s) to ground. Remove the spark plug cable and load test it with and without the spark plug boot.