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f2cafe racer
yozzer74:
If I lift the points with a screw driver I get a spark across the points which give me a week spark at plugs .?? Anyone no what's wrong
Bryanj:
Check the voltage at the points leads when the points are open to see if there is a voltage drop on any connections
yozzer74:
Ok just checked I've got12.8volts going in to coils and coming out and same down at points
yozzer74:
Just tryed kicking it with kick start producing a little spark at points then tried starter button now a big spark across 1&4 points and plugs sparking on 1&4 but nothing on 2&3 ??
K2-K6:
When you lift the points with it all connected yes it should spark.
What the points are doing is controlling the earth connection for the coils, when points open earth is removed and ht part of coil finds earth via the plugs so making a spark.
It's abit back to front as you are sending a current to the plugs by breaking the coil primary circuit so slightly counter intuitive to a conventional circuit if that makes sense.
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