Sucking leaking sound from head

[bangpaul]

I just got home from a ride and noticed the strangest sound coming from my left cylinder head. It sounds like pressure escaping from somewhere moist -- I don't know how else to describe. A kind of wet sucking sound.

Any ideas? After a few minutes it stopped, but it was quite noticeably loud, and I've never heard it before. I'm sure I would have noticed. Had just taken it for a half hour ride to blow the cobwebs out.

[tvrla]

LOL  

All of us have been concerned about that one at some point.

Did you wash the bike before going for the ride?

Did you hit a rain squal?

There are a few fins near the valve cover where trapped water merrily boils away, producing the sound you were hearing.

[wilcom]

I don't know how else to describe

Mine sounds like "bacon frying" when it's boiling off moisture that gets trapped in the fins in the valve cover/spark plug area.

Could it be that ?

[bangpaul]

Wirespokes, we just had our first big rain for the season last night, so the roads were a bit wet.

Cheers. It was freaking me out.

[Bob_Roller]

Put this back in the memory banks and save it for when it happens to you , when you turn the key to the "ON" position and get a wheezing/whistling sound .

When you turn the key on, the ignition system fires both spark plugs, if a valve is open and there is enough of a combustible mixture still present in the cylinder, it will ignite, with the aforementioned sound .

[fastcataz]

From the title I thought you might be close to a group of politictions.

[tvrla]

From the title I thought you might be close to a group of politictions.

Like, perhaps, we're getting close to having a few more statesmen?  

You've seen that signature line? Statesmen are dead politicians - and that's what we need - more statesmen!

[Ed Miller]

My bike does that almost every single day.  It probably did it today but I went in to get out of the rain.