June 22, 201610 yr Hey guys ? been out on my mate on my gas gas and his sherco today, after about 10 mins of riding I've noticed there was a lot of blue smoke behind him, at thought it was probably just a little rich but after another 2 mins he said she could smell burning, after checking over the bike the rear mudguard and bottom of the tank have melted on the back box and mid section, even after cutting the bike there was still smoke leaving the exhaust for at least 5 mins...I have honestly never seen anything so hot,..the back box was that hot it's melted the plastic exhaust guard straight off, So anyone know own what can cause this? The only thing I have changed is a s3 titanium front pipe, can't see it making much difference? I didn't run it again to check to see if the fan was working as I didn't dare run it again, Has anyone ever come across this? Thanks guys...
June 22, 201610 yr Older bikes that have not had their exhaust repacked can have this problem. The exhaust packing gets oil soaked and loses both it's sound suppression quality but also it's thermal quality. I believe on this model Sherco that the exhaust was not made to be easily repacked. It is possible to cut the exhaust open and repack but it is a messy job. Good luck.
June 23, 201610 yr Usually requires some hard fast running to get the gunk in the pipe to light off and burn like this. An excess accumulation of it over time is not a good thing. Another thing would be too slow(retarded) ignition timing.
June 23, 201610 yr Had this happen on my Sherco while revving hard up a long climb on the moor between sections. Sudden appearance of clouds of smoke from the exhaust which covered the landscape. First thought was I was suddenly burning gearbox oil somehow but ten minutes later all was well after the gunk in the exhaust had burnt off. Bike was five years old at the time so had quite a build up of oil in the silencer. Edited June 23, 201610 yr by cleanorbust
June 23, 201610 yr whats the simplest way of cleaning the fron pipe and rear section on a 2013 sherco? iv seen a post somewhere before involving caustic soda .. does it work?
June 24, 201610 yr whats the simplest way of cleaning the fron pipe and rear section on a 2013 sherco? iv seen a post somewhere before involving caustic soda .. does it work? not good on ali!
June 24, 201610 yr Used Brake fluid + water 50%/50% let pipe full overnight. or Use a GLP gas torch to reat the front pipe untill it get red. But this destroy pipe finish.
June 24, 201610 yr Lame answer that! Anyone helpfull with any ideas thanks .. Read, muppet! Dissolving amphoteric metals and compounds[edit] Strong bases attack aluminium. Sodium hydroxide reacts with aluminium and water to release hydrogen gas. The aluminium takes the oxygen atom from sodium hydroxide, which in turn takes the oxygen atom from the water, and releases the two hydrogen atoms, The reaction thus produces hydrogen gas and sodium aluminate. In this reaction, sodium hydroxide acts as an agent to make the solution alkaline, which aluminium can dissolve in. This reaction can be useful in etching, removing anodizing, or converting a polished surface to a satin-like finish, but without further passivation such as anodizing or alodining the surface may become degraded, either under normal use or in severe atmospheric conditions.
June 24, 201610 yr Was a answer like that the first time too difficult? Or do you assume everyone on here is as clued up as you .. Or you think you are! Muppet!
June 25, 201610 yr Was a answer like that the first time too difficult? Or do you assume everyone on here is as clued up as you .. Or you think you are! Muppet! Just because you failed to fully comprehend the brief caution I gave you on the use of it on aluminum does not make my response "LAME" or unhelpful! It is some nasty crap and will hurt you! It works well on steel parts but must be used with caution on ali. And let us not even touch on the fact you are hijacking the thread.
July 1, 201610 yr If you (shutty123) (or was it your mate) has recently fitted a titanium front pipe then this should not be carboned up. The caustic soda, or the brake fluid suggestions are meant for the front steel pipe only, not the aluminum silencer. There is a video of feeding heat and oxygen to the rear muffler (off the bike mounted in a purpose built cage), but while the oil burns off so does the packing, and it is extremely hard to control the temperature to stop the aluminum from melting. Safer method by far is to cut a trap door through the inner/wheel side, to remove and replace the oil sodden packing. Currently looking for picture to better explain. Edited July 1, 201610 yr by fanticisti
July 1, 201610 yr It was a warning given in genuine concern for your safety. Respect it as such. Took me a second to think what ali was too though.
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.