Carb Leak - Always A Mistake To Assume All Is OK!

[montmil]

Believe Jim the CadMan leveled his carbs as I've seen suggested on a couple sites.

With the bike on the centerstand and parked on "level ground" (my quotes!) when viewed from behind, the carburetors should be positioned vertically. Any serious tilt could possibly let float bowl fuel weep past an old, hardened gasket.

Right, Jim? [smiley=thumbsup.gif]   Monte  

[msbuck]

My turn with the leaking carbs.  My left side leaked while Graham was doing maintenance - he found trash in the bowls and cleaned them out.  We went out for a ride yesterday and when I stopped at the local Honda shop, my right bowl was leaking...and I had wondered why my foot slipped off the brake earlier.  So, more trash in the bowl.  

I think it's time to replace my fuel lines...now where was that link for Yellow fuel lines?...  8-)

[montmil]

Could be debris in the float needle seat causing fuel to vent out the overflow tube. Does sound as if your fuel lines are in less than ideal condition. Simple and economical chore to replace.   Monte

[Justin B.]

Aïda,

We had tons of grief on the '80 R65RS when we firt got it.  Seemed like every other time Suraklyn took it out he came back with wet-boot syndrome.  I went through needles, new floats, lapped the seats, etc - no good.  I finally pulled the worst offender and decided to clean it real good.  When I put some pressure to the needle seat (blowing back upstream) a bunch of hard black granules blew out.  I then took off the other carb with like results.  After this, no more leaking.  I am taking a WAG that the little hard black granules were decomposed fuel line...

[farmer]

Yes I leveled carb as described by Monte above. Have since received and installed new set of gaskets from Real Gaskets Corp. No more problems with leaks. Fuel lines were only 2 years old and seems fine.

Rob: Good point about riding boots, just have to overcome sticker shock when I shop for them!

[Justin B.]

I just ordered some of this:

http://www.aircraftspruce.com/catalog/appages/bingfuel.php

and some of this:

http://www.aircraftspruce.com/catalog/appages/fuelline.php

I have been using this:

http://www.aircraftspruce.com/catalog/appages/polyurethanetubing.php

The regular poly tubing seems to turn brown with age but I have had it on my '81 R100 for probably 4 years and it's still soft...

[Bob_Roller]

I emailed the Bing agency in Kansas, and they wanted $2.59US per foot.

Looks like it's Aircraft Spruce, for the next fuel line replacement, for the R65, and the oilhead.

[msbuck]

Graham's already been through the trash in the carb syndrome from deteriorating fuel lines on his R100.  I think he still has some fuel line laying around - oh yeah, he replaced his vent tube with the extra fuel line, so that is now his 'spare line' that he carries with him at all times...

I'm pretty sure that's my problem, so it's on the list now.