SOHC.co.uk Forums > CB350/400
Hettie wont start on the button !!
Nurse Julie:
Love it Hairy, electrics in plain English, I understood all of that. Thank you
K2-K6:
If you've got reasonable voltage reading on the battery and all the terminals are clean and tight then trying to start it gives a capacity \ load test the same as a dedicated test rig. Granted it doesn't give you a readout but slow or no start tells you its a fail anyway.
Another neat test they do on cars is to measure with a voltmeter from the alternator case to the battery earth terminal (yep I know they are both earth) but you should get a reading of less that 0.12volts (120mlvs) if it's higher than this then the earth leads and connects need looking at. Basically what you are reading is the inefficiency in your earth circuit as if the level is too high it's because the earth is tracking back through your meter rather than going where it should through the vehicle's earth system.
AshimotoK0:
Sounds like slightly sulphated battery. When lead-acid battery becomes discharged, white lead sulphate can form on the plates, which is insoluble and causes internal resistance and this prevents the battery providing the high current demanded by the starter. Lead acid and Lithium ion battery don't like 'deep discharge'. That's why lithium ion power tools suddenly just stop ...because they are protected from 'deep discharge'
Did you try jump starting from a car battery?
Make yourself a nice cup of that tea you made me :) and take five minutes to read section 6 of Mr Honda's manual in the link. It's got an excellent section on the technicalities of the electrics. (don't fall in love with the 'twins' though by reading the rest of the manual.
Here:-
https://www.dropbox.com/s/8i51vjqqdvllazj/CB350ShopManual.pdf?dl=0
Nurse Julie:
Yes Ash, I will read it when I feel life ain't worth living any more and depression has got to the point of no return ;D ;D ;D
All sorts now anyway. Trig cleaned up all the terminals and fitted a new battery yesterday so starting perfectly now.
AshimotoK0:
--- Quote from: Nurse Julie on July 20, 2016, 07:54:17 AM ---Yes Ash, I will read it when I feel life ain't worth living any more and depression has got to the point of no return ;D ;D ;D
All sorts now anyway. Trig cleaned up all the terminals and fitted a new battery yesterday so starting perfectly now.
--- End quote ---
Shame on you :) Knowledge is king !
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