Question about 2003 Honda VTR 250
First i presume the engine is turning over when you hit the starter and the coil /module you replaced is a known good unit,check resistance on secondary side and make sure all earths ARE earthed.....First of all i'd check the pulse/trigger coil , it could be completely dead.that would be the black/yellow and green/white wires coming from the engine case,they should read around 125 ohms and have about 4 cranking volts,make sure the spark plug is ok too.then id check the timing and make sure that the flywheel key has'nt broken and it's just spinning on the shaft.Hope this can be useful to you CFI.....Tabbycat
Posted on May 02, 2009
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Posted on Jan 02, 2017
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If the engine has no spark, check for
voltage at the coil positive terminal when the ignition key is on. If NO
voltage, then problem is on the trigger side of the coil (pickup, crank sensor,
ignition module or primary wiring circuit).
But If there is NO voltage at the coil
itself, then in that case the problem is on the supply side (the ignition
switch or ignition wiring circuit).
But if the coil has voltage, then problem may be a bad high voltage output wire from the coil to spark plugs or hairline cracks in the coil output tower.------Getting this all possibilities checked will point towards the exact faulty part which is to be replaced.----------This should help.Thanks.Helpmech.
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