"like a German clock"??? I think you mean "Swiss Watch" which before digital watches were the ultimate in precision. The Germans made the "Cuckcoo Clock" they were not precision made and only made a lot of noise every hour. Or is that the case with your NH?
--- On Fri, 6/12/09, Dennis <[email protected]> wrote: From: Dennis <[email protected]> Subject: [Nighthawk Lovers] Postscript on my carbs > igniter > coil problem recently solved To: [email protected] Date: Friday, June 12, 2009, 11:48 AM All, My '86 CB700SC is running like a champ with the new coil. In fact, it's running so well that it's made me change my mind on my earlier opinion of what was ailing my bike. Before the coil failed and the bike began to run on two cylinders out of four, it was running unevenly for a long time. At that time, I thought my carbs must be unbalanced. What it felt like to me was that I'd be going along and have the throttle right on the edge between decelerating and accelerating and it was like some cylinders were hitting and some were missing - as if some had the gas mix they needed and others did not. The bike was fine under acceleration and it idled OK though it seemed a bit rough and unbalanced to me. I was pretty sure I wasn't imagining this stuff because I've got another CB700SC, a 1985, and it runs like a German clock so I had something to compare against. But, now that I've got the new coil in, all of that weirdness has gone away and the bike's cylinders all seem to be well balanced while cruising and while idling. So, my conclusion is that before the coil failed outright, it must have been supplying sub-standard spark to two of my four cylinders. This was a very nasty problem to sort out because even after the coil failed, it still measured just as the shop manual said it should when I put a VOM on it. In the end, I found the problem, thanks to Dennis H's advice, by swapping my coils left and right and noting that now the other two plugs were failing to fire. The point here is that before the coil failed outright, I don't think I'd have ever had a snowball's chance in hell of finding out why my machine was running rough unless I'd have swapped now coils in which would have been a pretty radical troubleshooting move. There's no particular moral to this story that I can think of other than sometimes things are just not straightforward to troubleshoot. Dennis G. - Seattle - '85 & '86 CB700SC --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en -~----------~----~----~----~------~----~------~--~---
