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Discussion in 'Thumpers' started by willys, Nov 19, 2011.
Easy fix... Ride it more so there is less gas in it and don't lay her down.
perfect, thank you.
The vacuum petcock is still on it, and it has it's own line from the carb, no tee. it does backfire a little under deceleration, and there's a little black in the lip of the exhaust...this could be what's going on there. I'll look into blocking that off.
It needs to be able to breath or fart on occasion.
If we were fuel injected, it would be sealed. Our caps are vented".
Be glad we don't have the gay rubber hose coming out of it like real dirt bikes.
Watch this video, you will see his gas cap leak as well.
But I thought the tube coming out the back under the seat was the vent... in which case nothing should be coming out the cap?
I know the lines you are talking about.
Actually, the longest one, that indeed runs the length back under your seat, is the radiator overflow line. Follow it sometime. If your radiator overflow ever bilged really bad, it would blow hot antifreeze onto your back tire from under your fender.
Here some other gas cap info,
EDIT - Disregard, the link above from Unstable Rider is more thorough, and more right than my post... good link!
My KLR has one of those "gay rubber hoses" for a vent and guess what? It doesn't leak when on its side and yours shouldn't either, at least not around the cap.....
Those have a check valve in them, right? That's what prevents it from leaking?
Yeah, you buy the valve separately. My actual hose is only an inch long or so with the valve stuffed in it.
My DR350 had a little "gay hose" also!
This is the only pic I could find show my "gay little hose". I didn't like it draped up and through the triple tree so I just cut it off erect and stuffed a valve in it. Is it me or is this thread sounding suggestive all of a sudden ??
In the lower part of the picture below you will see a rubber o-ring just below the hinge screw. On a couple of my KLR's the o-ring was missing or not sealing well. If it doesn't seal it will leak gas if the bike is laid over. That o-ring is at the top of the pipe that runs inside the tank and exits at the rear of the tank right above the rear tank mounting bolts. I normally super-glue a second o-ring in just to make sure it doesn't leak, which is what I have done to the bike in the picture.
Ya I agree,Brian I got some Heath issue going on at the moment,I'll hit you to go breeze some dirt as soon as I fiquer out what's wrong with me.
I had no idea that was supposed to be there! doh! I just glued one in place on my bike as it was missing. it's just barely sticking up above the lip, I may glue a second one in place also. I wonder if this will stop the whistling I hear when my tank gets lower.
This is helpful. I'll take a look tonight and see what I find. See, I thought the problem might be the bigger o-ring on the inside of the cap that covers the big hole. I thought that guy might be old or compressed or something. I DID have to take the cap off to paint my tank, maybe it fell off somewhere. Either way, I'll make sure my cap area looks like that!
Ya me too,saved the picture and gonna make sure my O ring is there also
I believe there are o-rings under the hinge screws so if you took the cap off those could have gone missing although not much fuel would get past the threads. There are also some mushroom type valves inside the fuel cap (where the lock cylinder is) that can go bad but that won't cause it to leak fuel from the cap area if the vent line o-ring is sealing.
Luckily for me, I have a Tech Day planned Friday at my place with all the Winnipeg guys. Maybe one of them could also help me if I can't fix it by then.
Also, I randomly had issues with the bike again yesterday...
I could get it started just fine but it needed to be kep reving pretty high or it would die. so I set the idle screw to hold it a bit more open until it at least warmed up properly, so I rode around with pretty high rpms to see what would happen.
When I got back home (still revving pretty high) When I got off the bike and left it running it just died by itself. From like, 2000-2200 rpm. That shouldn't happen. Like, Reving.. reving.. reving.. annnnnnnd sputter and die. what the hell.
And it was running 100% before that :huh
clogged pilot. do you have an inline filter for fuel?
I had a similar problem where the bike would run, then randomly die after 20 min or so and wouldn't start back up unless i held the trottle open. i cleaned the carb and it still did it, took it to a shop and they cleaned it with a machine and got a piece of "trash" out of it. they also put in an inline filter and its worked great since then.
Yeah see I littereally JUST cleaned it. Took it all apart. It's so frustrating. I checked the pilot and it was clear. Maybe i'll just wait until my tech day and I'll have the guys look at it.