On the later bikes you have to remove a screw and thread in the tubes for the vacuum gauges. The screws should be fairly obvious. Sent via BlackBerry by AT&T
-----Original Message----- From: Ralf Oehlerich <[email protected]> Sender: [email protected] Date: Tue, 28 Feb 2012 09:46:26 To: <[email protected]> Reply-To: [email protected] Subject: Re: [Nighthawk Lovers] Re: 81 CB750C Carbs idling at 3500??? I was able to adjust the idle by dropping the sync screws on 1/3/4 carb. 2 was not getting hot, so I think that was the right thing to do. 2 is now getting hot. There is no way to sync these carbs with a normal gauge since there are no tube on the intake side. The idle screw now works as well. Just don;t know if they are in sync. But for now, I am good. On Tue, Feb 28, 2012 at 8:10 AM, EGrider <[email protected]> wrote: > The carbs may be leaking air at the cylinder head. Try spraying some > starter fluid at the boots between the carbs and the cylinders while > she's running. If she idles even faster, she's leaking air and running > too lean, causing your problem. I had the same issue until I got the > boots properly snugged down and sealed. Just be careful not to tighten > too much. > > On Feb 28, 3:17 am, Ralf Oehlerich <[email protected]> wrote: > > Working on a 81 CB750 custom and just cleaned the jets on the carbs. Put > > everything back on the bike and she idles at 3500 rpm. Could that be a > bad > > fit/too much air? > > Cables are free and idle screw is all the way out. Air box and filter are > > in place. Plugs are NOT new. She runs fine, just WAY too high even with > > choke off when cold. > > -- > 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. > > -- 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. -- 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.
