SOHC.co.uk Forums > CB350/400

No spark

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yozzer74:
Hello been a while I've bought myself a 400/400 needs plenty of work doing to it.engine turns over on start button but it as no spark. I've run a wire from battery to the coils to power them which then gives me a spark all be it a tiny one. Does anyone have any ideas what the problem could be. I've also done a compression test on it I'm getting 100 psi across all 4 cylinder.  My gauge is only a cheap thing off ebay so not too sure how accurate it will be. But should it run with that much compression?? Thanks in advance.

yozzer74:
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robvangulik:
As you never know how accurate the gauge is, so long as they all have about the same pressure it should run fine.

Bryanj:
Kill switch or ignition switch could be faulty, clean and reset points and timing. If that really is compression its very low

yozzer74:
the previous owner as fitted a new kill switch so that should be good. ill check ingnition switch out thanks

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