Honda-SOHC
SOHC.co.uk Forums => CB500/550 => Topic started by: mickwinf on February 03, 2013, 08:11:08 PM
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hi everyone, i tried to start the 500/4 today after a few months in storage but it was very reluctant to fire up and needed a squirt of carb cleaner. But only fired on cyls 1/4 so i replaced points and checked timing, but still no spark.have checked wiring but now suspect the coil, can they just stop working?
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It's not unknown, but rare. Have you tried running a new/temp bit of wire from the negative side of the coil to the points/condenser, also a temp live to the positive side?
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Check the connections in the rubber boot by the rear brake
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have checked connections and all good, i am getting a 12v at points but no ht spark
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Check the countinuity through the points to makes sure they are not permanantly earthed, and so give now switching to the coils.
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AND clean the contact surfaces as if they oxidised there will be limited continuity
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I replaced the points but still the same, have ordered a coil so will try again at weekend, bike is still stored in a lockup with no electricity so have to have daylight to work on it.
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well fitted the new coil still no spark, after a lot of messing about turned out to be two duff plugs!!
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Ooops we didn't think of that!
Has anyone sneaked the plugs into the bottom of the oven while sunday lunch was cooking to dry them properley...or is that just a two-stroke trick?