Preasure under oil cap/dipstick- Bubbles

[Clancy]

Hi Guys

Checking my oil today after a short ride i noticed pressure under the oil cap/dipstick. It made a fizzing noise when i opened it. Also the oil had very fine bubbles in it.

Any one have this?

One other thing.
With the bike off i cab hear what i think is fuel still moving/flowing near the carbs. Only happens after a ride. Very quiet but sounds like fuel trying to pass thru a kinked hose. The bike runs fine. fuel consumption is good. I have a lunchbox, rejet and slip-on. hoses are routed fine and not kinked.

The bubbles and noise only last for about a minute.

Any thought would be much appreciated

I leave for a 900km trip tomorrow so am a a bit anxious about the old gs making it.

Cheers
Clancy

[joshr08]

i would go with a plugged tank vent or partial plugged tank vent on the sound.  not sure on pressure building in the crank case i would say check crank case breather line not sure if the gs has a case breather i know theres a breather on the top of the valve cover.

[Clancy]

i would go with a plugged tank vent or partial plugged tank vent on the sound.  not sure on pressure building in the crank case i would say check crank case breather line not sure if the gs has a case breather i know theres a breather on the top of the valve cover.

Hmmmm. Where would i find this vent?

Bike seems to be running fine. Anything to worry about in he next 900km?

[Clancy]

just checked my breather filter from the valve cover. replaced it with some shop towel and some zip ties, took her for a run. Low and behold.....
No pressure build up under the oil cap.

Blocked breather filter!

Fixed.

[joshr08]

IIRC tank vents through key hole