Topic: Rain storm Killed my 72 CB 750

[sgelsot]

Like an idiot i drove about a mile in in downpour.  Just as I was parking my starter tried starting the bike, and hit the kill switch, no luck right to the key.  Left the bike till next day  and tried starting no luck.  Everthing else working lights, horn, turn signals, but no spark to to the plugs.(sounds just like it would but turnover) Took apart the kill switch to clean connectors and check for broken wire.(all seems well there) When trying to start it i jump the brass connectors with a screw driver and it sometimes when Hit the handlebars blow the fuse.(info) Ive got the tank off and also in the bucket looking for a loose connection and have found a bolt on the frame that has the remnants of copper wire screwed to it.(just above the coils)  Is this suppose to be the ground for the coils and if not should i be looking for it.  Happened last week and after preparing here and at the Greenspun archives. Thanks  in Advance

[Geeto67]

Pull the ignition cover (right side) and take a look for any burned out wires and such. check the points. I ride my 75 in the rain all the time and usually the only problem I have is when the points get wet the bike will refuse to run. Since it is under a cover it takes a long time to dry out if water got in.

the thing about the stater sounds like the right handlebar switch shorted out (b/c it had water in it maybe). I had a problem like that a while ago where the kill switch grounded out and left me stranded, replaced the bar control and everything worked after that. The circuit board in the right control is cheap cardboard and prone to water damage. try drying it out and see if it helps.

To check if you have spark, pull a plug and ground it to the frame while you crank the motor, you should see it spark.