SOHC.co.uk Forums > CB350/400

Calling the electricians: I've got no power!

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Drew400:
Thank you both.

Cheers,

D.

Drew400:
Thanks to a new fuse box and original indicator relay, it's all working and looks somewhat neater!

However, after turning the engine on the starter for maybe a second or so, it stopped working properly. There is some grinding type noise coming from the solenoid, that you can feel if holding it, and it seems like the starter motor may be turning, but only slowly.

Has my solenoid failed? Is there a way of checking (I have a very basic knowledge of how to use my multimeter)? All other electrics appear to still be working fine.

Thank you all,

D.

hairygit:
Is the battery fully charged?

Lobo:
...great question hairy git! And here was I launching into complicated stuff....

Drew... assuming your battery is ok, it sounds like your relay is 'chattering' - possibly through (a) low voltage & Hairy Git's solution, or (b) poor connections, or (c) simply failing.

(1) To check the starter switch side of the circuit, take a jumper wire directly from the Red/ yellow terminal of the solenoid to the battery +ve. This bypasses the stater switch & wiring; ie if the starter spins nicely now it implies a problem there. Beware, the moment you connect these two terminals the starter should leap into life.

(2) to check the earthing side of the solenoid circuit take a jumper wire from the solenoid small post (black?) directly to the battery -ve. Press the starter button.  If it's cured the problem the fault lies in the earthing side, which includes the clutch switch.

(3) to check the solenoid, (ie if the all the above don't fettle it), then short the two big posts of the starter solenoid. Expect BIGGUM sparks - use a hefty screwdriver. Basically you'll be connecting the battery directly to the starter motor through your screwdriver... which'll be carrying 80A or so. Exciting... and don't have petrol etc abouts you.

Good luck... I'm with hairygits  idea though.

Simon

Drew400:
Thank you both,

Job for tomorrow. I think the battery's OK but it's on charge just in case. Hope that's the answer before I launch into all that complicated stuff!

Cheers,

D.

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