Gas in crankcase

roadcapDen · Post by **roadcapDen** » Wed Oct 12, 2011 7:01 am

305'rs,

Noticed my rebuilt S'Hawk's oil level was a little bit high so I drained some off and there is gas in there?

Bike only has a few miles since rebuild because it's bogging bad, fouls plugs and some times when it runs only left side is hot.

Is blowing some oil out the pipes but thought it is because it's still breaking in.

The floats (which are good) are set to proper level and they are not overflowing.

How is the gas getting in there?

Thanks all,

davomoto · Post by **davomoto** » Wed Oct 12, 2011 10:18 am

Float sticking or improperly adjusted allowing fuel to flow into the intake. The gas in the oil will cause it to run rich.

Davo

roadcapDen · Post by **roadcapDen** » Thu Oct 13, 2011 8:12 am

Thanks!

UPDATE!
Drained the oil last night to the tune of about 2 litres! = lots of gas = made it run rich?
Petcock is NOT leaking = must be worn valve? or I've left it on.
Floats at 22mm.

Just to be sure,
the slides should have the bevel to "aft" ie air filter side?...................
Needle (stock) should be all the way up ie clip at the bottom?.................
10w40 MC oil is OK?...............

> > #42 and #135 jets and needle is #2423 clip in middle.
> > Air mix 1 1/8 out.

Hahnda · Post by **Hahnda** » Thu Oct 13, 2011 8:45 am

Your float valve may not be working properly. Is it the original float needle or a replacement? Does that float have a leak in it?

roadcapDen · Post by **roadcapDen** » Thu Oct 13, 2011 8:51 am

Thanks,

All original and rubber etc looks good, no leaks.

Just to be sure,
the slides should have the bevel to "aft" ie air filter side?...................
Needle (stock) should be all the way up ie clip at the bottom?.................
10w40 MC oil is OK?...............

Hahnda · Post by **Hahnda** » Thu Oct 13, 2011 8:58 am

Yes bevels towards the filters. Your choice of oil won't really be a factor in getting it running.

davomoto · Post by **davomoto** » Thu Oct 13, 2011 9:45 am

the slides should have the bevel to "aft" ie air filter side?................... YES

Needle (stock) should be all the way up ie clip at the bottom?................. SECOND NOTCH FROM BOTTOM

10w40 MC oil is OK?............... YES. I USE NON-SYNTHETIC FOR BREAK IN.

Adjust your floats like this link, and make sure they dont have fuel in them, remove and shake and listen.

Davo

http://www.honda305.com/upload/h305_for ... rb_214.jpg