Switched Fuel Vent Lines?

[BluegrassPicker]

Congratulations to me! - I just finished my first Fuel filter change.

I marked the vent lines, but not well enough :o)

I am 85% confident I did not switch the vent lines, but what are the symptoms of switched vent lines?

Feel free to discuss while I await a replacement for my broken quick-disconnect ....

[awagnon]

Shouldn't be a big deal. However, the easiest way to check is to disconnect the mid-connectors where the front half of the hoses meet the back half just to the right of the fuse box. Blow in the hoses while feeling or listening to air coming out the hole in the fuel filler neck. That hose goes to the vent down beside the brake petal. The other hose goes to the charcoal canister, if you still have it.

[BluegrassPicker]

Shouldn't be a big deal. However, the easiest way to check is to disconnect the mid-connectors where the front half of the hoses meet the back half just to the right of the fuse box. Blow in the hoses while feeling or listening to air coming out the hole in the fuel filler neck. That hose goes to the vent down beside the brake petal. The other hose goes to the charcoal canister, if you still have it.

Thanks, that helps from the mid connectors on down, but I may have switched them inside the tank (?)

[awagnon]

Thanks, that helps from the mid connectors on down, but I may have switched them inside the tank (?)

Shouldn't matter. If you blow in the hose at the mid-point connector and air comes out the hole in the filler neck, that is the vent hose. If I recall, the metal tubes for the small hoses that run through the fuel pump/filter plate are both the same and are simply a way of getting the hose past the plate. Either hose could connect to either pipe and make the correction at the mid connector.


http://i116.photobucket.com/albums/o35/awagnon/Fuelpump.jpg

[BluegrassPicker]

Shouldn't matter. If you blow in the hose at the mid-point connector and air comes out the hole in the filler neck, that is the vent hose. .....[/IMG]

OK - I get it. Thanks Al for your help with this.

Tom

[wespatterson]

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http://i116.photobucket.com/albums/o35/awagnon/Fuelpump.jpg[/QUOTE]


Where did you find this exploded diagram? Would like to have access to the diagrams for my bike. Just bought a '95 R11GS and have a fuel leak out the breather line. Leaked really bad when I filled up to full tank and stopped when I ran the gas down. Pretty sure that it's cracked inside the tank.
Also, are the quick disconnects reliable? Would like to install on my bike.
I'm handy but learning about my bike! Thanks, Wes

[awagnon]

Where did you find this exploded diagram? Would like to have access to the diagrams for my bike. Just bought a '95 R11GS and have a fuel leak out the breather line. Leaked really bad when I filled up to full tank and stopped when I ran the gas down. Pretty sure that it's cracked inside the tank.
Also, are the quick disconnects reliable? Would like to install on my bike.
I'm handy but learning about my bike! Thanks, Wes

The diagram came from the BMW maintenance CD. I purchased mine, but I've seen copies floating around the internet for free. The aftermarket maintenance books by Clymer, etc. have fair diagrams, but not as good as the BMW ones. Let me know if you can't find a copy on the internet. However, mine is just for the 1150 bikes. You might also do a search on the Adventure Rider forum. Most of those guys do their own wrenching.

I would use any metal quick disconnects. I used the Omegas on both of my R1150 bikes. They are plug compatible with the plastic OEM QD's, which is nice. However, some just feel QD's are another source of leak and just use straight hoses. To each his own.....

[PGlaves]

Start at the mid-line connectors at the frame rail. Having an able assistant helps. Blow into one line - up forward toward the tank. If the air comes out where the gas cap opens that is the drain line. If it comes out inside the tank, that is the vent line. Mark them.

Now reverse the process: blow into a line going backwards along the frame. If it comes out the hose down by the foot peg, that is the drain line. If it blows back into the charcoal cannister, that is the vent line.

Connect them together correctly.

[BluegrassPicker]

Start at the mid-line connectors at the frame rail. Having an able assistant helps. Blow into one line - up forward toward the tank. If the air comes out where the gas cap opens that is the drain line. If it comes out inside the tank, that is the vent line. Mark them.

Now reverse the process: blow into a line going backwards along the frame. If it comes out the hose down by the foot peg, that is the drain line. If it blows back into the charcoal cannister, that is the vent line.

Connect them together correctly.

Thanks Paul, new quick disconnects are in and i verified that I had the vents correct with the above method.

Quick test ride reveals no leaks :o)

Finally warm enough in MN for riding