| Author | Message | ||
     Country  |
Ok, Yet, something else. It sounds like my motor is hitting the frame somewhere. I've looked at all the possible places where the motor could be hitting and I haven't seen any actual wearing of the paint on the frame. Any ideas. It is really a low knocking sound at times. Could this be a worn cylinder head or something worse? Thanks guys, the last time I took the bike in without "knowing" for sure what the problem was they tried to get me the 1 hr diagnostics charge. Want to avoid that as much as possible. Thanks. | ||
| Reepicheep  |
Check the top front motor mount for cracks. Also check the exhaust mounts, in particular the front one. There is an upgraded replacement for it that is FAR superior. | ||
| Hoser  |
Loose engine sprocket nut ??? , I've seen more than a couple of those !. | ||
| Reepicheep |
Good point! I had one of those and thought I lost a crank bearing. It was kind of a ringing clanking noise, would ring at idle, and go away if there was any kind of load on the engine. | ||
| Country |
I'll check the motor and exhaust mounts again, and I'll look more closely this time. How do I check the loose engine sprocket nut? Reep, what you explained is what happens sometimes but not all the time. The other times there is a bad low knocking but it doesn't really sound like the cylinder head hitting. | ||
| Reepicheep |
Check the nut by pulling the primary cover, and re-torquing it both the crank nut and the mainshaft nut. In my case, it was PAINFULLY obvious, the metal cup with the magnets for the stator was flopping around to the touch. If you have not dealt with the primary chain tensioner yet, upgrade that to the new part while you are in there, and get the new metal primary gasket. (Message edited by reepicheep on January 05, 2005) | ||
| Henrik  |
Badly torn isolators might give a feeling of motor hitting as well? Henrik | ||
| Firemanjim  |
Top front engine mount washer may have turned so notch no longer faces front and washer is hitting frame?? | ||
| Country |
Ok, I checked the top motor mount, seems fine, no cracks and was pretty solid when I started the bike up. I also checked the exhaust mounts but they are solid as well. While I was lookin I checked all the rubber parts for tears and wear. All "seemed" ok. I'll check the engine mount washer for notch. When I turned it on again, it didn't make the same noises as before. Could be just the tank wasn't seated properly? And that was what the knocking sound I heard? Also I noticed my fuel overfill tube was loose, but I just tucked that back in the mix of other tubes and hoses. Made sure that it didn't kink though. | ||
| Mikej  |
You can sometimes get a knock/rattle from the gastank nose thumping the loop it goes through. You can remove the tank and check the pads on the bottom of the tank that ride on the frame and also check for wear/rub locations while you have the tank off. | ||
| Country |
I don't know, but the sound has pretty much gone away. FOR NOW that is. We'll see in the future. | ||
| Knickers  |
Does anyone else have this issue? Bike sits for weeks at 20F or colder. Temperatures rise into the 40s so I go for a ride and the vibration us unreal, but it goes away after about 10 minutes. If I ride the bike regularly in 40 degree weather It doesn't happen, only if the bike sits for a couple of weeks. Isolators are in good shape afik. I'm getting used to it, but it's still freaky every time I take the bike out of cold storage. Never seen the phenomenon mentioned here. | ||
| Philip |
sometimes oil will settle in the crankcase when sitting for a while. i could be clinging to the crank causing an imbalance until some heat is generated. just a guess. a check valve is supposed to keep the oil from out of the crankcase but but it seems to be a common problem. let it warm up a little longer and see what happens. philip | ||
| Road_thing  |
Your tires are flat-spotted from sitting in one position in the cold. After they warm up, they get round and the vibration goes away. Move south of I-10 and you'll never have the problem again! rt | ||
| Roadrunr  |
R.T. is right, my tires are SQUARE now.  | ||
| Aaomy  |
cold tires???? yesterday morning it was -21 out ,, any your calling 40 above cold tire weather???? hell we would all be out sun bathing in that weather... any thing above 0 is reason for a good barba Q and patio party..not that we dont barba Q below 0 on other days,,  | ||
| Outrider  |
Just a note to let you privileged folks living in the SunBelt that a simple trick to prevent the flat spots on your tires when it gets cold is to park your bike on 3/4" plywood. For some reason it insulates the tires enough to not deaden the rubber. I learned this trick from a local independent dealer that stores bikes for the winter months. |
