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What does the CDI unit do?
Im curious as to what the CDI actually does/control on a motorcycle. Also what happens when its faulty?
1 Answer
- Who Dat ?Lv 71 decade agoFavorite Answer
Capacitive Discharge Ignition. it controls the spark going to your plugs & usually varies the timing of that spark in response to the amount of vaccum in the manifold & rpm of the motor. most of the time they either work or they dont & the motor runs or not. rarely the timing part varies when it shouldnt & can cause pinging & a rough idle. if its any help to you cdi replaces the old points & condenser & advance mechanism
- 1 decade ago
thats the ignition module it controls spark. bad ones usually wont start but can cause missing poor perf.
