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Author Topic: 500 on 2 cyls  (Read 1918 times)

Offline mickwinf

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500 on 2 cyls
« on: February 03, 2013, 08:11:08 PM »
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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Love the 500 and 550 have a 500 called Lazarus under restoration

Offline hairygit

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Re: 500 on 2 cyls
« Reply #1 on: February 03, 2013, 08:26:27 PM »
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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If it's got tits or wheels, it's hassle, if it's got both, RUN!!!

Offline Bryanj

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Re: 500 on 2 cyls
« Reply #2 on: February 04, 2013, 07:16:56 AM »
Check the connections in the rubber boot by the rear brake
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Offline mickwinf

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Re: 500 on 2 cyls
« Reply #3 on: February 04, 2013, 09:19:07 AM »
have checked connections and all good, i am getting a 12v at points but no ht spark
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Love the 500 and 550 have a 500 called Lazarus under restoration

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Re: 500 on 2 cyls
« Reply #4 on: February 04, 2013, 07:39:00 PM »
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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Offline Bryanj

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Re: 500 on 2 cyls
« Reply #5 on: February 05, 2013, 05:04:51 AM »
AND clean the contact surfaces as if they oxidised there will be limited continuity
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Offline mickwinf

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Re: 500 on 2 cyls
« Reply #6 on: February 05, 2013, 09:10:55 AM »
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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Love the 500 and 550 have a 500 called Lazarus under restoration

Offline mickwinf

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Re: 500 on 2 cyls
« Reply #7 on: February 10, 2013, 10:23:55 PM »
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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Love the 500 and 550 have a 500 called Lazarus under restoration

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Re: 500 on 2 cyls
« Reply #8 on: February 11, 2013, 06:15:28 PM »
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?
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