New Rider
Currently Offline
Posts: 2 
Likes: 0
Joined: Sept 8, 2017 13:05:57 GMT -5
|
Post by jbea1981 on Sept 8, 2017 13:21:09 GMT -5
Hi guys I'm a newb on here and new ish to riding. My 125 lexmoto auto spontaneously began popping and backfiring on low rpm tonight. Had a look through threads on here and may be the exhaust header pipe. An old post advised there should be 2 bolts where the pipe meets the motor. The 2 bolts are there without nuts. I am not sure if this is the cause? The exhaust doesn't feel loose and seems fitted tight to the motor at all points. I don't want to do too much fiddling myself but not happy taking it in to garage if it's a straight forward fix. The roads and potholes are a nightmare around me so I do wonder if the nuts have come loose while riding. Any pointers would be much appreciated! TU 👍
|
|
|
|
Post by tortoise on Sept 8, 2017 16:02:32 GMT -5
|
|
New Rider
Currently Offline
Posts: 17 
Likes: 0
Joined: Jan 7, 2017 13:58:27 GMT -5
|
Post by dav3 on Sept 8, 2017 17:52:41 GMT -5
That is a very cool tip!!
|
|
|
|
Post by lostforawhile on Sept 8, 2017 21:30:01 GMT -5
the idea in the video is good, but it's the wrong material and they will still come loose, they need to be safety wired to each other, then to a fixed point on the engine, this prevents them from moving at all, safety wire and a basic set of safety wire pliers isn't that much, plus there are many other things that need to be safety wired on a bike, there are good videos on youtube on the proper technique , bikes have the same issues as airplane engines, everything wants to vibrate loose.
|
|
New Rider
Currently Offline
Posts: 2
Likes: 0
Joined: Sept 8, 2017 13:05:57 GMT -5
|
Post by jbea1981 on Sept 9, 2017 3:29:45 GMT -5
Thanks for replies. I can clearly see in video that nuts are in place. Any suggestions on the type? Thanks again
|
|
|
|
Post by tortoise on Sept 9, 2017 4:59:06 GMT -5
May need to measure the stud diameter . . Lexmoto references M6 and M8 sizes. |
|
|
|
Post by lostforawhile on Sept 9, 2017 8:22:40 GMT -5
|
|
Freshman Rider
Currently Offline
Posts: 82
Likes: 4
Joined: Mar 18, 2017 11:12:13 GMT -5
|
Post by 125scooterbro on Sept 10, 2017 16:07:47 GMT -5
Hi guys I'm a newb on here and new ish to riding. My 125 lexmoto auto spontaneously began popping and backfiring on low rpm tonight. Had a look through threads on here and may be the exhaust header pipe. An old post advised there should be 2 bolts where the pipe meets the motor. The 2 bolts are there without nuts. I am not sure if this is the cause? The exhaust doesn't feel loose and seems fitted tight to the motor at all points. I don't want to do too much fiddling myself but not happy taking it in to garage if it's a straight forward fix. The roads and potholes are a nightmare around me so I do wonder if the nuts have come loose while riding. Any pointers would be much appreciated! TU 👍 i can think of 2 things, bad timing or running to rich also a new spark plug will help |
|
