The engine won't run on just two cylinders (mine wouldn't) so they must be firing at least sometimes. Second clogged up carbs are a much higher probability than worn rings, burned valves, broken springs, etc. I would change the plugs since they are cheap and easy to do, they will also give you an indication of what's going on in there. Be sure to ride the bike for 15 minutes before you pull the plugs because idling with the choke on will give you a false rich reading. If all the pipes get hot after a proper warm up, and the bike seems to run smooth, then you are probably ok. Doing a compression test is a good check to do, but unless the engine has high miles it will probably have good compression. Besides if the rings are shot it will smoke. Sent via BlackBerry by AT&T
-----Original Message----- From: Matt Rowe <[email protected]> Sender: [email protected] Date: Sat, 30 Apr 2011 12:11:53 To: Nighthawk Motorcycle Lovers!<[email protected]> Reply-To: [email protected] Subject: [Nighthawk Lovers] Re: NH 750 cold pipes On Apr 30, 11:21 am, vadik selo <[email protected]> wrote: > so i was changing oil today in my 1993 nh 750 and i've noticed that my 2 > left pipes that come out of the engine are hot after running a bike for 5 > min and my 2 rite ones are barely warm but the exhaust fumes come out of > both pipes and it seem to run good, its strong well it seems since i never > drove any other nighthawks > > is that a problem? couold the other cylinders be not getting any fuel? spark > plugs are bad?? > any ideas? > thanks Definitely check, and if necessary, change your plugs. I would also do a compression test on each cylinder. It sounds like low compression on the two right side cylinders. They may be running, but not like they should. You can get a compression tester fairly cheap at Harbor Freight Tools. Low heat off of the headers is a classic symptom of low compression or, if your lucky, bad plugs. How has your fuel mileage been? Acceleration? -- 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.
