I can't really answer that but Rpm should be around 1200. You know the carbs are not right and this only happens at the really low rpm. I'd rectify the carburetor issue first.
Even though you are getting a set of rebuilt carbs you will still need to sync them. Do you have a manometer? Also how is the inside of the gas tank? Rusted or varnished gunky tank will only messed up your new carbs. Sent from my iPhone > On Apr 6, 2016, at 8:49 AM, Erik Prime <primee...@gmail.com> wrote: > > Yea, the carbs are all varnished and leaking like hell. Rather than taking > them apart, replacing the gaskets and soaking them in solvents, I just bought > a set of refurbished carbs from a guy on ebay that does carbs. The money > doesn't bother me, it wasn't that much. So do all of these bikes sound like > that when the RPM's dip? > >> On Tuesday, April 5, 2016 at 8:10:52 PM UTC-4, jman2343 wrote: >> Also smell your oil for gas. Carbs might be over filling causing rich >> mixture >> >> Sent from my iPhone >> >>> On Apr 5, 2016, at 3:25 PM, Erik Prime <prim...@gmail.com> wrote: >>> >>> CORRECT LINK click there. OOPS >>> >>>> On Tuesday, April 5, 2016 at 2:55:59 PM UTC-4, Erik Prime wrote: >>>> Re-starting this post with a new, better video. I hear a knock coming from >>>> the lower part of the engine, whenever the idle is below 1000RPM >>>> >>>> >>>> >>>> It only does this below 1000 RPM, on a cold start. The knock goes away >>>> over 1200RPMS (where the idle should be) >>>> >>>> I DID notice, when taking off in 1st gear, as the RPM dips below 1000 i >>>> can hear it too. The Plugs, Coils/wires have been replaced, but I am just >>>> going to pay for new/reman/cleaned carbs because these carbs are all >>>> leaking and rusty. But Before I spend more time and money on the bike, I >>>> wonder what this noise is and how serious it is? >>> >>> -- >>> 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 nighthawk_love...@googlegroups.com. >>> To post to this group, send email to nighthaw...@googlegroups.com. >>> Visit this group at https://groups.google.com/group/nighthawk_lovers. >>> For more options, visit https://groups.google.com/d/optout. > > -- > 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 nighthawk_lovers+unsubscr...@googlegroups.com. > To post to this group, send email to nighthawk_lovers@googlegroups.com. > Visit this group at https://groups.google.com/group/nighthawk_lovers. > For more options, visit https://groups.google.com/d/optout. -- 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 nighthawk_lovers+unsubscr...@googlegroups.com. To post to this group, send email to nighthawk_lovers@googlegroups.com. Visit this group at https://groups.google.com/group/nighthawk_lovers. For more options, visit https://groups.google.com/d/optout.
