Why don't I get a spark from my new coil on my scooter?

by Victor
(St Paul, MN, USA)

I am not getting a spark when I try to start my scooter, so I bought a new spark plug coil and still no spark. I also bought a new battery... any ideas?

Comments for Why don't I get a spark from my new coil on my scooter?

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Aug 03, 2011
needed check if have poor spark but no run.
by: louis

My linhai 260 good motor cheap elecate need check grond had promblen from cdi and headlight wiring bad no main plug connecter just lug wires. I think took out reg on red wire side give you batter power ac to dc.

Nov 28, 2010
About $30 for a Haynes Chinese scooter manual
by: G

The Haynes Chinese scooter manual is available for about $30. These scooters are relatively simple to troubleshoot once you know the process and have found the test values for the components in your scooters ignition system.

Basically you are testing for resistance values. Only the CDI unit can't be tested this way, but by testing everything else you can determine a potential CDI problem by process of elimination.

Also when testing ignition secondary, if coil with cap is excessively high resistance, best to remove cap and retest against coil without cap values. (In case you aren't aware, the spark plug cap portion will unthread from a threaded tip at the end of the spark plug wire, and can be replaced independently from, and for a fraction of the cost, of a new ignition coil.)

My experience has been the cap can develop deposits which lead to high resistance even though the coil itself is OK. Additionally, a good solid metal to metal ground is also critical to coil reliability. My Chinese scooter had a very poor ground until I modified it; suspect this might be common.

Oct 28, 2010
Replaced the coil and still had no spark
by: Anonymous

Well talking to others about our little problem, that I was not getting any spark, a friend of my son's asked us to check all the wiring, and what we found was that a lot of the wires were corroded and after cleaning them up, we got spark, and I hope sharing this can help others before buying a new coil.

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