SOHC.co.uk Forums > CB350/400

No sparks on my 400... :o(

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K2-K6:
It's good that you found it without too much cost.

Multimeters, I don't know how you can do some stuff without them as you've said. I've got one with a bleep for continuity that's really good for checking integrity without any power on the circuit.

crank sensors and intermittent stuff's a bit harder though you can use "an old-silly-scope" for that.

mick:
Nice one Cyril  ;) glad you got it sorted.

470four:

--- Quote from: mick on February 27, 2011, 08:36:58 PM ---Nice one Cyril  ;) glad you got it sorted.

--- End quote ---
;D

Got to wait until Tuesday (March 1st) to tax it now.... Looks like a nice day at the mo, so I want to ride it into work - will try and do it online on Tues morning...

PatM:
Glad to read that all ended well- I kicked myself when it happened to me- but simle when its something simple. I know the electronic ignition solves points-wear- but I had a 400 in the 80s and the black-box let me down. At least with points you can see and measure if theres a problem.
I nearly took my 400 out today but thought better of it- I shall jump on the nice warm Beemer tomorrow..yep, Im getting older..

Yoshi823:
Ernie Bransden use to have his shop in Anerley in South London. He used to be a lecturer at Bromley Technical College, & so was in an ideal situation to be able to design his own ignition system. I too bought myself a complete setup for my much modified CB750F2, & when I thought that I had a fault with it I took it back to Ernie for him to have a look at. Before he even looked at it he did state that 99/100 it was due to bad connections going to & from the back box. What I hadn't realised was that when I had come off the 750 a week or so beforehand, the Rickman engine protectors had sliced through most of the blue or yellow wire taking the signal from the points housing to the black box. I didn't realise this until the bike started to cut out onto 2 cylinders.
What I would ask though is why your blue & yellow wires are going anywhere near to your drive chain when they should be joining the wiring loom by the connector sleeve by the back light switch wiring connectors?

Glad that you got it sorted though. One of my invaluable tools in my shed is a multimeter, amongst other tools...but I have an O'sillyscope as well, just for that time when you do need to look at signals to/from sensors.

I can also understand why you found it difficult to slice up your birthday cake...it made quite a picture. Thank you for sharing it with us...

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