Canisterectomy Photos

[Dean_BMW]

At a recent tech day, I captured a photo of all of the parts that are removed when you do a canisterectomy. I had never seen a pic of all the parts, so hopefully others will find the photo useful.

[Offwego]

I don't remember all that hose when I did mine. Guess I'll be trimming the excess during my 12k service!

[Dean_BMW]

I don't remember all that hose when I did mine. Guess I'll be trimming the excess during my 12k service!
A lot of people just remove the canister and cap the hose off.... which will work, but all of the extra stuff is just stuff you no longer need once you have removed the canister.

You will need to buy four little rubber caps to cover the ports on the throttle bodies when you remove everything.

I am not sure what size rubber caps you need. Maybe some wise person will post that info.

[Schweintechnik]

A lot of people just remove the canister and cap the hose off.... which will work, but all of the extra stuff is just stuff you no longer need once you have removed the canister.

You will need to buy four little rubber caps to cover the ports on the throttle bodies when you remove everything.

I am not sure what size rubber caps you need. Maybe some wise person will post that info.

Anyone ever reveal any details on plugging the throttle body inlets?

Also - is there any consequence to eliminating the valve you've pictured, such as the Motronic unit faulting out?

[Lare]

We have IM240 emissions inspection in Arizona. Will doing a cannisterectomy cause problems with that? OR maybe a better question would be "is it legal for me to even think about it?"

[grifscoots]

Anyone ever reveal any details on plugging the throttle body inlets?

Also - is there any consequence to eliminating the valve you've pictured, such as the Motronic unit faulting out?I've done a bunch of them without any faults ever being thrown. Now that I own a GS-911 I can attest to that fact. And this answers the next post: all it does is draw fuel vapors into the throttle bodies. It won't effect emissions.

I use the small rubber caps that you can buy at any auto parts store to plug the throttle body inlets. Be aware that years down the road, and mucho riding in heat, causes the rubber to become brittle and start cracking. I didn't notice it till about 90,000 miles.

BTW, the pic at the start of this thread is from a bike I was working on.

[Schweintechnik]

I've done a bunch of them without any faults ever being thrown. Now that I own a GS-911 I can attest to that fact. And this answers the next post: all it does is draw fuel vapors into the throttle bodies. It won't effect emissions.

I use the small rubber caps that you can buy at any auto parts store to plug the throttle body inlets. Be aware that years down the road, and mucho riding in heat, causes the rubber to become brittle and start cracking. I didn't notice it till about 90,000 miles.

BTW, the pic at the start of this thread is from a bike I was working on.

I'll stop by on the way home today, but I haven't measured the inlet diameters - I won't be surprised if I have to specify size. I'm thinking about 1/4" OD on the inlet nipples and 5/32" or so on the ID. And it sounds like you're talking about caps that fit over the outside of the nipples, not plugs that go inside.

[grifscoots]

I'll stop by on the way home today, but I haven't measured the inlet diameters - I won't be surprised if I have to specify size. I'm thinking about 1/4" OD on the inlet nipples and 5/32" or so on the ID. And it sounds like you're talking about caps that fit over the outside of the nipples, not plugs that go inside.Correct. I don't know the size, but get the variety pack, you can always use them in your nose, etc.

[jbrown]

OK, novice question. Why do it at all? Does it cause problems
being there or do you get better mileage afterwards? Has any
dealers squaked at you when you took one in for service and
it was removed?

[NOGILLS2]

Jim there are two main reasons for doing it. First is when you overfill the fuel tank it will vapor lock the system causing the fuel tank to collapse, thus damaging the the fuel gauge. If gone unnoticed will cause other problems.
Second it gives you an awesome place to install a permanant air compressor with detachable hose. note check farkles on Ari's bike over in Finland, he placed a gauge in the side of the topcase,(COOL)!

[grifscoots]

Also, if the vent hose hanging down by the rear wheel gets clogged, it will cause the tank to negative pressure.

I haven't heard of a dealer yet squaking, and we've been doing this for years.

[relic]

You will need to buy four little rubber caps to cover the ports on the throttle bodies when you remove everything.

I am not sure what size rubber caps you need. Maybe some wise person will post that info.

Those little rubber caps are actually a BMW Part Number used on the older throttle bodies. Those little ports were the site for diagnostic hook-up and were covered by factory caps before all this federal EPA intervention crap.

I knew the P/N at one time, and bought a few for just this purpose, but have since lost track of it. Your dealer parts guy should be able to fix you up; but not as economically as generic caps from an auto supply if you can find the right size.

[Schweintechnik]

Those little rubber caps are actually a BMW Part Number used on the older throttle bodies. Those little ports were the site for diagnostic hook-up and were covered by factory caps before all this federal EPA intervention crap.

I knew the P/N at one time, and bought a few for just this purpose, but have since lost track of it. Your dealer parts guy should be able to fix you up; but not as economically as generic caps from an auto supply if you can find the right size.

Had a flash of brilliance on the way home this afternoon after seeing the $7 price tag for a pack of about 20 little caps of various sizes at AutoZone...they are identical to the ones that you stick on the cut ends of that white wire closet shelving, but unfortunately the closet shelf caps are too big... anyway, we have a wide variety of hole plugs for painting motorcycle parts at work, and they're designed to withstand many cycles of oven heat. Gonna see if I can find some that fit; they may even last longer than grif's hot pink doo dads.