My bike suddenly smells... hot? Fumey? Oily? Different!

[c_dug]

2010 Aprilia Shiver 750 - a shade under 19,000 miles.

In the last few days when stopped at traffic lights I am getting a strange smell from the bike and it is slightly disconcerting. It rides fine, and sounds fine, but it certainly doesn't smell like normal.

It's hard to pin down what it is exactly, there is no smoke from the exhaust, no sign of oil at the ends of the pipes, no sign of the oil level dropping. It smells fuely I suppose but it is riding fine and my mpg seems normal.

I don't want to ignore it because A) It smells bad every time I stop, and B) I'm sure something isn't right, I just can't suss what.

I've had a good look over the outside of the exhaust and I am fairly certain it is not something melting on the outside.

Any thoughts on what I should be checking?
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I am a bellend, I am a man of constant sorrow, I am a gummy bear, I am a rock.

[xX-Alex-Xx]

You checked the brakes? Could be binding a bit and getting hot.
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DILLIGAF

[jaffa90]

"""""""""""It smells fuely I suppose """"""

Maybe fumes venting off from the fuel cap.
Regulator / rectifiers can get hot and stink as well.

[UncleFester]

Have you got an exhaust leak somewhere or some kind of fuel drip / oil leak that's evaporating off the warm parts of the engine / exhaust?
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Module 1 and 2 passed - October 2014. Happy owner of a 2017 Z1000SX, ex owner of a YBR125 / CB500 / VFR800.

[stinkwheel]

Have a good look at the various drain/overflow hoses.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[UncleFester]

You thinking one blocked with chain crud / road crap or is kinked and forcing vapour out elsewhere?
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Module 1 and 2 passed - October 2014. Happy owner of a 2017 Z1000SX, ex owner of a YBR125 / CB500 / VFR800.

[stinkwheel]

[UncleFester]

https://www.apriliaforum.com/forums/showthread.php?310725-2009-Dorso-Oil-Leak!&highlight=2009+dorso+oil+leak

Suggests a look in the airbox
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Module 1 and 2 passed - October 2014. Happy owner of a 2017 Z1000SX, ex owner of a YBR125 / CB500 / VFR800.

[redeem ouzzer]

Airbox or associated oil breather would be my first guess it it's not obviously leaking oil onto the engine or exhaust.
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Be a REAL MAN!

[c_dug]

[c_dug]

[Nobby the Bastard]

Electrical stuff smells very different when burning to fuel or exhaust.
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trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050

[c_dug]

I've had an oil breather spit out oil before as it goes. Previous owner had WAY overfilled the oil and I clearly didn't check properly before riding home.

The oil is very much in the middle of the lines on the sight glass which I guess would raise the question of why it is venting/overflowing oil if that's what it is. Anyway, good suggestion to check the pipes to see if they're venting somewhere they shouldn't be, I'll have a look over the weekend.

Actually... as it goes I did spill a bit of fuel down the overflow the other morning, but it was about two weeks ago. I suppose it's plausible that it is still dripping down the pipe a bit? I'll check that too.
____________________
I am a bellend, I am a man of constant sorrow, I am a gummy bear, I am a rock.

[c_dug]

[c_dug]

Turns out it's an exhaust leak after all - 10 points to uncle fester.
____________________
I am a bellend, I am a man of constant sorrow, I am a gummy bear, I am a rock.

[trevor saxe-coburg-gotha]

haven't read - got the original system on? I read up about putting akros on - sound great but apparently totally needs a power commander sort of mod
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"Life is a sexually transmitted disease and the mortality rate is one hundred percent."

Mobylette Type 50 ---> Raleigh Grifter ---> Neval Minsk 125

[c_dug]

Original pipes, I'd quite like something a tad fruitier sounding but I commute at about 6am and standard are noisy enough as it is for my sleepy little cul-de-sac!

Not fully sussed where the leak is from yet, either the top of the cat or the joining gasket to the silencer, the latter seems more likely but it feels like it's coming from the cat and the weld doesn't look great.
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I am a bellend, I am a man of constant sorrow, I am a gummy bear, I am a rock.

[Chuffin Nora]

[jaffa90]

[NorthantsPete]

i used to get this with a hole in my exhaust.

Last night i got it on the rxs howeve rid just wrapped it, so for me it was the wrap getting hot for the first time

if at the lights its becuase youve stopped and the heat and smell gets chance to come up to your nose
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No sense but plenty of determination