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Before you get too far down the path rebuilding or replacing things, let's check out a few things.  You said you "assume" this is gas laying in your air cleaner housing.  Are you sure it's gas?

While it's entirely possible that your petcock is not shutting off and needs repair or replaced -- It may not be the case. It would be entirely normal to smell gas when you take take the filter off.  And the system is designed to suck the crank-case vapors - including stray engine oil- into the breather.   If your air and crankcase breather system is still stock, the whole thing runs oily and dirty by the way it's designed, and would have to be cleaned up periodically.  Is the milk bottle full of oil?   Mine, when I got it was full and backing up into the air cleaner box.

Like Ratman said, that air filter looks to be the age of the bike.  If it's very old, I'd say it looks "normal" and just needs replaced.  If you replaced it last year, on the other hand, then that's really cruddy.

On the fuel petcock- Do the test Seedman said- it is entirely possible it is not shutting off.  Mine went bad, but it had no symptoms except I noticed when I had the fuel line off going to the carb, it would not shut off.  I tried to rebuild it and had it apart several times, but it would not work right, so I bought a new valve.   Another thing -- if the petcock IS bad, and if you find the float needle to be bad also--  allowing gas to run through the carb when it's shut off, then one more thing you need to be leery of -- check your oil for gas contamination.  The extra gas can run into the cylinders and down in the crank case and you'll have an over-full crank case with very thin oil.

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Posted by mittico68

- February 02, 2017, 12:31:45 PM

Okay. I will try it asap and then I'll report.
Thanx a lot for now.

Posted by CDNRatMan

- February 02, 2017, 12:01:43 PM

Alright, When I open the air cleaner, I to get a smell of gas, not a lot not overpowering, but you can smell it. I have a stock setup no mods done to the air filtering or the air box in any way. I am thinking yours is the same. I do not see any indication of the fuel running from the carb down the where it is sitting. Perhaps try some Seafoam to clean out the carb, a petcock cleaning and rebuild on a 18 year old bike just might be in order. I also get a misting of oil in the air box, in along the bottom same place as your gas is. My milk bottle there at the end of the oil line it is always about half full by the end of the summer.
I also got rid of the stock air filter and went with a K&N filter, I remove it in the fall, wash it well with a soap water solution, let it dry and re spray with the K&N oil to make it work. How old is your filter? Perhaps time to change for a new one. An honestly my filter has never been blackened, not sure why yours would be, is the bike running normal otherwise.......
So simple steps, check that your fuel is in fact shutting off, through the petcock, then see if the float bowl is not working properly, those 2 things done and working correctly then we have to delve deeper.

Posted by OR Seedman

- February 02, 2017, 11:55:35 AM

looks to me like your vacuum petcock is not shutting off completely and allowing fuel to flow into the carb. Also, your float is not shutting off the flow in the carb bowl completely, allowing fuel to "flood" the air cleaner.... My petcock does the same thing...but I have already cleaned and rebuilt the carb, so the float shuts off the fuel flowing into the bowl..

I would disconnect the fuel line from the petcock and see if fuel still flows through it....it shouldn't if the bike is not running....if it does, the petcock is bad and needs to be cleaned/rebuilt or replaced...also, you need to clean the float bowl in the carb and make sure it shuts off the fuel when full...

thoughts, Ratman?

Posted by mittico68

- February 02, 2017, 05:49:00 AM

Hi Fellas,
today I was checkin' the air filter and as soon as I opened the box I felt a strong smell of gasoline, coming from it.
So, I've looked at it closer and I've found that the black plastic box is partially soaked and I assume that's gasoline...(look at the attached pics, please).
As for the air filter, I've seen that it is partially blacked...(again, look at pics). Is it because of the said gasoline?
If so, is that normal or what?
Awaitin' for you Drifter Gurus to reply asap... THANX!

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