Oil smells like fuel.. maybe?
Hi all, Ive poured through Thumper talk and old reddit threads about this issue as it seems common. Just wanted some help as im new to motorcycles and before I start tearing into the bike if its not needed.
I did an oil change less than 1000km ago and the oil was normal.
Yesterday, I checked the oil after a ride and could have sworn it smelled gassy. I smelled some new oil in a fresh bottle, it had no smell to it. Asked my wife to confirm, she said the oil dipstick smelled like "something."
Common causes seem like a bad petcock combo with a bad carb float o ring.
So I pulled the vacuum line from petcock - line was dry and did not smell of gas. I pulled the main line from the petcock in ON position, it did not leak any gas. Petcock seemed okay to me based on this.
I was reading that a bad float o ring or stuck float would cause the smelly oil and would also cause the bike to idle bad, not run when hot, have trouble starting, etc.
So i then ran the engine for about 7-10 minutes. Bike started first try, no struggle. Idled normally, no stalling, no bogging down, no smoke, etc. and it starts first try even when warmed up.
I read that if you have gas in your oil, you can take a small amount and try to light it on fire. If gas is present the fumes will ignite. However, I tried this and the oil/fumes did not ignite.
Any one have any thoughts on what other tests I could do to check and see if my oil is contaminated? If not for the slightly gassy oil smell, I wouldnt have assumed anything was wrong. I would prefer to avoid doing a carb tear down and clean if I dont have to.