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Old 05-02-2011, 07:21 AM
blakjak3000 blakjak3000 is offline
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Join Date: Dec 2010
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Apologies for another post but have a question about timing/spark.....

If the flywheel timing marking is off and as above should work out when piston is TDC to the cam marking.....does that not only make sure the valves open and close with the correct piston positions.....what about when the spark happens. Surely the flyweel is designed that when it reaches a certain position (i'm assuming the larger metal bump aligned with the 6th coil of the stator) the CDI is instructed to release the voltage its has stored from the induction of the other 5 coils? If the flywheel is off, and the timing maybe wrong then could another reason for the engine not firing is that now the spark could be firing when the piston is at the bottom, or when the exhaust valve is open etc etc......If this is the case, how do you align all of the cam/piston/spark timing?

Apologies if this seems like a realllly noob question, but it just came to me that its the last part of the puzzle that may not be correctly timed

thanks again

Jamie