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Failing condensers

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hubster123:
Hi.... I’ve just put this on the sohc world forum, not knowing there is a UK one......

Can anyone give a reason for a condenser continuously failing.
I’ve replaced the condenser for 1 and 4 cylinders 4 times now with less than 100 miles on all of them put together.
Last night I was out on the bike and another one failed. Fortunately I was carrying another which failed after a couple of hundred yards. All four have been from different manufacturers


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hubster123:
The scenario is bike running fine, then starts running really rough so that to get home I have to really keep the revs up. I feel the headers and 1 and 4 are cold.
I swapped the condensers round and 1 and 4 headers are hot while 2 and 3 are cold.
So I buy new condensers and the problem is solved for a short while. Then again, it starts running really rough and 1 and 4 headers are cold. So I replace the condenser for 1 and 4 and lo and behold the problem is solved again.. Then the same thing happens again, so I replace the condenser for 1 and 4 again... runs for a few miles no problem then it happens again... and so on and so forth


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Johnwebley:
Are you sure it's the condensers?


It COULD be the coils.
As they warm up. They start to fail.

Are they original?



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hubster123:
I don’t know if the coils are original as in fitted when new but they are stock ones.
Would a bad coil cause a condenser to fail though.. Like I say, if I fit a new condenser it all works fine but then that condenser (specifically for 1 and 4 cylinders) stops working


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Johnwebley:
It could also be using R plugs and resistance plug caps.

Have you checked the caps to make sure they are not "burnt ".

They should measure 5k ohms.

Unlikely all the capacitors are faulty.



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