Maybe check your coils. I've seen this happen on air-cooled VW's. Hopefully its not the coils.
On 9/1/10, Kyle Munz <[email protected]> wrote: > Oh, you put it in the subject, I guess I'm just blind. Anyways, the first > thing I would check on yours, because it's cheap and easy to do, is the old > glass fuses between your handlebars. I had one old and physically falling > apart that was causing similar issues. The engine would die and the tack > would instantly 0 out even though I could feel the engine still turning. > When that happened to me the starter button wouldn't spin the engine though. > After replacing all the fuses, checking the battery cables, also try pulling > a sparkplug, ground the electrode to the fins and check for spark. Possibly > your coils are weak and failing after they heat up? Lets hope not, fuses are > a much easier fix. > > -Kyle > > > On Wed, Sep 1, 2010 at 10:32 AM, David Cummings < > [email protected]> wrote: > >> CB700SC, thought I mentioned that... >> >> On Wed, Sep 1, 2010 at 11:31 AM, David Cummings >> <[email protected]> wrote: >> > Happened again this morning. Frustrating as all ****. >> > >> > Starter turns and it wants to catch, but it seems like there's no fuel >> > - or too much fuel. I've been running with the petcock set to reserve >> > for a while as I have a small vacuum leak on the petcock and at 80+ >> > it'll sputter and die, until I slow way down or switch to reserve >> > (runs the float bowls dry). I wonder if it's been running lean as a >> > result of being "on reserve". >> > >> > What's really strange is that it runs fine after I've let it sit for a >> > little while. Over the weekend I did two 600 mile trips and it did >> > this once on the 2nd one, and I let it cool, and it was fine for the >> > next 300mi. >> > >> > Just bought a petcock rebuild kit and new sparkplugs - figured they >> > were probably getting old at this point anyway. I'll look over the >> > electric tonight - I do have a feeling my negative terminal is loose, >> > been having to check it regularly... >> > >> > Thanks, >> > -Dave >> > >> > On Wed, Sep 1, 2010 at 9:13 AM, Kyle Munz <[email protected]> wrote: >> >> What kind of NH was this? I've experienced similar issues with really >> old >> >> fuses. They weren't blown, they were just old and falling apart and >> >> intermittently opening. Heat could probably cause that, vibration as >> well. >> >> The thing to do is make note of what works and what doesn't, then look >> at >> >> the wiring diagram in the back of the service manual and trace out the >> stuff >> >> that works against the stuff that doesn't and see what the common link >> is. >> >> There is no thermal kill switch on these bikes. Since they're air >> >> cooled >> it >> >> really has no way of knowing what the temperature is. >> >> >> >> -Kyle >> >> >> >> >> >> On Tue, Aug 31, 2010 at 11:00 PM, David Cummings >> >> <[email protected]> wrote: >> >>> >> >>> Hey All, >> >>> >> >>> Wondering if anyone has experienced this and if it is just >> >>> overheating - what I can do about it. >> >>> >> >>> Riding back from Indianapolis this weekend I was following a >> >>> trailer for a while to try and get some mileage - and the bike >> >>> suddenly lost tach, lights, etc. and then kicked back on, did this a >> >>> couple times but was clearly losing power and I pulled off. Bike shut >> >>> off and I couldn't restart. Freaked out for a minute, on a whim, I >> >>> sprinkled some water on it and it skitted off - like from a really >> >>> really hot pan. So I ate a granola bar and waited a while. Bike >> >>> started back up and was idling well, so I suited back up and made sure >> >>> to avoid drafting too much - got back fine (another couple hundred >> >>> miles). >> >>> >> >>> Then today, I get cut off riding home from work, screamed at >> >>> the lady driving, end up in front of her at a stop light, and the bike >> >>> dies. Very funny. Pull off and it won't restart. Same symptoms as >> >>> before. Wait 15min and rode home, no problem. >> >>> >> >>> Checked oil when I got home, looks fine (changed it less than >> >>> 2,000mi ago), and was *maybe* 1/3 qt low - so I'll top that off, but I >> >>> really doubt that was the problem. Should I be worried about an >> >>> obstruction in the oil pipes/cooler somewhere? Or could this be >> >>> fuel/electrical related. Very strange. Does the CB700SC have an >> >>> overheat kill? >> >>> >> >>> What should I be looking for/doing? I can pick up a CBR600 for >> >>> cheap, but this has been my DD for almost a year now, and I'm trying >> >>> to keep putting miles on it! >> >>> >> >>> Thanks, >> >>> -Dave >> >>> >> >>> -- >> >>> 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]<nighthawk_lovers%[email protected]> >> . >> >>> For more options, visit this group at >> >>> http://groups.google.com/group/nighthawk_lovers?hl=en. >> >>> >> >> >> >> -- >> >> 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]<nighthawk_lovers%[email protected]> >> . >> >> For more options, visit this group at >> >> http://groups.google.com/group/nighthawk_lovers?hl=en. >> >> >> > >> >> -- >> 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]<nighthawk_lovers%[email protected]> >> . >> For more options, visit this group at >> http://groups.google.com/group/nighthawk_lovers?hl=en. >> >> > > -- > 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. > > -- Sent from my mobile device -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. 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