Yamaha ybr125 exhuast smelling of petrol.

Linesi77 · Derestricted Danger Joined: 19 Mar 2016 Karma :

I've put a straight through exhaust onto the injected model and blocked off the breather pipe..the bike runs perfectly fine and only really smells when I put my nose near the exhaust, or if I pit my hand over the hole and smell.. picture below of the spark plug it's a pretty old spark plug as well, but does the spark plug look normal? Any help would be appreciated thanks!

https://postimg.org/image/k0hjgpieh/

Rogerborg · nimbA Joined: 26 Oct 2010 Karma :

Workshop section is a better place for this sort of question.

Linesi77 · Derestricted Danger Joined: 19 Mar 2016 Karma :

Sorry no I don't have any pictures at the moment, it's the pipe that comes from near the seat that would attach to the exhaust. But as this exhaust doesn't have the pipe I was advised to block it off.. does the spark plug look normal?

Piercee100 · Trackday Trickster Joined: 07 Mar 2011 Karma :

Plug looks fine, but but if worried I would fit a new plug and try some plug chops.
Could it just be your running with the choke on? Take it for a ride and see what it smells like once it's fully warmed up.

As Rogerborg said, is or was there an Oxygen sensor fitted before and is there now?
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Rides: Honda H100a (Retired), VT500e (Sold), Kawasaki ZX400 (sold), Kawasaki GT550 (Sold), Suzuki Inazuma (Daily), Honda CD185t (Broken), LML Star 2t (Last run edition).