Thanks. I am all good now. purrs like a kitten. The idle (primary) imulsion tubes were a little dirty and the sync was way off.
On Wed, Feb 29, 2012 at 5:09 PM, Robert Kariniemi < [email protected]> wrote: > If idle is uncontrollable like that I would suspect a vacuum leak. You > need to spray Carb cleaner or starting fluid around all gasket areas. I had > this once. It was a vacuum leak on the right Carb gasket. 82 450sc. > On Feb 29, 2012 2:10 PM, "Ralf Oehlerich" <[email protected]> wrote: > >> I set it at 3 turns out. >> >> On Wed, Feb 29, 2012 at 2:29 PM, Allen Thomas <[email protected]>wrote: >> >>> How many turns out on the fuel screws? Just curious. >>> Sent via BlackBerry by AT&T >>> ------------------------------ >>> *From: *Ralf Oehlerich <[email protected]> >>> *Sender: *[email protected] >>> *Date: *Wed, 29 Feb 2012 11:46:14 -0500 >>> *To: *[email protected]< >>> [email protected]> >>> *ReplyTo: *[email protected] >>> *Subject: *Re: [Nighthawk Lovers] 81 CB750C Carbs idling at 3500??? >>> >>> Cb750 is all good. Had to clean out idle jets and bench sync carbs >>> >>> Sent from my iPhone >>> >>> >>> On Feb 28, 2012, at 10:45 PM, "Allen Thomas" <[email protected]> >>> wrote: >>> >>> PS the PO probably backed out the fuel screws to compensate for dirty >>> carbs. Now that you cleaned them the cylinders are getting too much fuel. >>> I'm not familiar with your specific model, but on later models about 3 >>> turns out is about right, I'd start there. Of course I could be wrong with >>> all of this, but we have seen that issue before. Let us know the fix when >>> you get it sorted out. >>> Sent via BlackBerry by AT&T >>> ------------------------------ >>> *From: *"Allen Thomas" <[email protected]> >>> *Date: *Wed, 29 Feb 2012 03:26:45 +0000 >>> *To: *Nightwawk Lovers<[email protected]> >>> *ReplyTo: *[email protected] >>> *Subject: *Re: [Nighthawk Lovers] 81 CB750C Carbs idling at 3500??? >>> >>> From the factory Honda sets them so lean that if you touch the throttle >>> the engine will die. If you have to crack the throttle to get it to start >>> then I'd say it is way too rich. When it warms up does the exhaust start >>> popping? (Rich condition) IMHO you can't do an effective carb cleaning with >>> out removing the pilot screws. That could be why #2 isn't firing, its idle >>> circuit sounds clogged. +1 on doing a bench sync of the butterflies, it may >>> not be perfect but that will get the carbs close enough for it to run right >>> once you get the mixture correct. >>> Sent via BlackBerry by AT&T >>> ------------------------------ >>> *From: *Ralf Oehlerich <[email protected]> >>> *Sender: *[email protected] >>> *Date: *Tue, 28 Feb 2012 22:14:41 -0500 >>> *To: *<[email protected]> >>> *ReplyTo: *[email protected] >>> *Subject: *Re: [Nighthawk Lovers] 81 CB750C Carbs idling at 3500??? >>> >>> Worked on it more this afternoon. The trick with the sync screws did not >>> help. Now the choke does nothing. I never touched air/fuel screws or idle >>> jet. Now you need some throttle to start it and hold it for a while, then >>> it idles again at about 2000+. Cylinder 2 is NOT getting hot still. I will >>> pull the carbs again and try to sync the butterflies. I found an excellent >>> article that discusses rebuilding these specific carbs. >>> >>> On Tue, Feb 28, 2012 at 7:55 PM, Allen Thomas <[email protected]>wrote: >>> >>>> ** >>>> Has it ever run right to your knowledge. Did you do anything else done >>>> besides cleaning the carbs? Did you count the turns on the fuel screws >>>> before removing them? Will it start without the choke? >>>> Sent via BlackBerry by AT&T >>>> ------------------------------ >>>> *From: *Ralf Oehlerich <[email protected]> >>>> *Sender: *[email protected] >>>> *Date: *Tue, 28 Feb 2012 03:17:39 -0500 >>>> *To: *<[email protected]> >>>> *ReplyTo: *[email protected] >>>> *Subject: *[Nighthawk Lovers] 81 CB750C Carbs idling at 3500??? >>>> >>>> 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. >>> >>> -- >>> 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. >>> >> >> -- >> 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.
