I can't remember but you may be able to remove the # 4 bowl without removing the carbs. If so you can try squirting carb spray up through the jets, then compressed air. It would help if you could turn the bike upside down however ......
Sent from my iPad > On Nov 6, 2015, at 10:57, EGrider <[email protected]> wrote: > > Working on my 1978 CB550K. Let's call it a "70's Nighthawk." One carb was > dumping gas all over the tranny as soon as I turned on the petcock, so I > pulled the carbs and pulled a piece of rubber out that was blocking the > needle valve. Problem solved. > > While off, I noticed a setting on the bottom of each carb. I looked in the > shop manual, but I don't see anything about it, and the scans of the pictures > are so bad I can't really make much out. > > I'm attaching a picture. Can anybody tell me what that setting is? Mixture > screw? (Graham, you're my prime candidate.) > > Carbs back on, bike starts up, but #4 is cold. Cylinder has spark, and #1 is > firing normally. Filled bowls (still on bike) with Sea Foam for 24 hrs. No > change. > > What is my next course of action? Pull carbs again (that was a PITA) and soak > carb #4? Interestingly, the main jets screw right out, but I don't see any > way of removing the slow jets for cleaning, or I would have done that while > they were off. Never ran it past an idle (raining here for the past 2 > weeks), so I don't know if #4 kicks in on 1'2 throttle. Thoughts? > -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/nighthawk_lovers. > For more options, visit https://groups.google.com/d/optout. > <Mystery-setting.jpg> -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/nighthawk_lovers. For more options, visit https://groups.google.com/d/optout.
