Vintage and Classic Hondas

Electrical

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Braden

Electrical

I have a 1982 CB759F Super Sport. I just changed the oil, clutch cable and tightened the fuel valve. Bike started with no issues. 4 hours later I tried to take the bike for a spin. Rolling out of driveway in neutral, i turned the key on. The lights turned on, then i pushed the starter and everything shut off and I cannot get power to anything.

Battery is new and tested at 12 v. Connections are tight. I dont see any loose cables. Main fuse is good and so are the remaining fuses.

Any help is appreciated. Otherwise i will buy a newer bike.

TOOLS1

Re: Electrical

Administrator

Buying a new bike is kind of extreme. Can I have this one if you do?

If you do get a new bike and give this one to me, I will check the battery cable connections, and the fuseable link (metal strip hidden in the rubber starter solenoid mount) since these are the two things that cause a DOHC CB 750 to just loose all power.
TOOLS

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Truck

Re: Electrical

In reply to this post by Braden

Did you test the battery after everything went dead? If battery is dead charge it then test it at 2000+ RPM to see if it is charging.

It's only illegal if you get caught.

If at first you don't succeed, use more lighter fluid

95% of Harley Davidsons ever made are still on the road... The other 5% made it home.

New Baltimore, Va '82 CB900c, 1980 CB985F/K 'Mutt"

Re-run

Re: Electrical

Administrator

In reply to this post by Braden

Battery might be new, but that doesn't mean it is good. The second a battery is filled, its life counts down. You buy a battery that has been filled for 6 months, that is 6 months you can't get back.

Also, tested at 12V? That is a weak battery. A battery need to test at 12.6 volts to be fully charged. A battery consists of 6 cells, each cell at full charge is 2.1 volts.

Also, you battery could read 12.6, but as soon as a load is placed on it, go straight to zero. Never assume the battery is good just cause it shows a certain voltage. This is for ANY bike.

Also, as Truck said, charge it and see if the bike starts. If so, rev to 2000+ rpm and check to see what voltage is. Is needs to be 13.5 to about 14.5. It is isn't, the bike is not charging.

And as TOOLS suggested, check your fuses and such. Also check the plug under the ignition switch. Make sure it is contacting properly.

Also, a new bike isn't the answer. What will you do when that one has problems? Buy another? No, it is better in the long run to learn your bike, whatever bike you have.

The ride IS the adventure. The destination is just to get gas!