Author Topic: close to giving up, cb400f throws out some strange things  (Read 675 times)

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Offline Redline it

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close to giving up, cb400f throws out some strange things
« on: December 10, 2015, 10:31:18 PM »
put a brand new battery in a old cb400f friend of mine a month ago. Yep I broke down and quit using the kick starter. It's been working #$%*en. Got, or had a valve cover gasket leaking fairly to midland. Had all but the valve adjusters slackened to take the cover off to change the oring. Asked here on the forum for help. Impatience got me, I put it back together and was going to attempt to check everything, compression, and "another" float check after over 21 of them, timing, and the whole thing first. So I went for a ride to warm it up. And check for obvious pressure leaks with a soapy water squirt bottle. Runs great, maybe too great. got it back warm, first thing I did was check the voltage on new battery. 12.5 I'm like dangit. So I start it and do a quick rev voltage test, and at about 13.4v total somewhere over 2000, and that is where the little beast quit producing, up to 5000. The very ride before was textbook manual perfect in the charge department. I wasn't looking for electrical issues this trip!

Offline calj737

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Re: close to giving up, cb400f throws out some strange things
« Reply #1 on: December 11, 2015, 05:41:59 AM »
Try a little maintenance in all your ground connections. And I mean ALL of them. It's the number 1 cause of electrical issues.
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Offline Redline it

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Re: close to giving up, cb400f throws out some strange things
« Reply #2 on: December 11, 2015, 10:34:37 AM »
Try a little maintenance in all your ground connections. And I mean ALL of them. It's the number 1 cause of electrical issues.
thanks, that's awesome, there's a little light at the end of the tunnel. I did find a book yesterday on 12volt dc, with good instructions on open and shorts both the pos and neg side checks with a multimeter. Electricity or electrical circuits have always been not understood at all, on paper!