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Oil cap leaks


pdxstriper

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pdxstriper

I have a 2004 R1150RT with 22K miles. Ever since I got it - second owner - it has consumed oil at the rate of about a liter every 1,000 miles. Some of the oil appears to be released from the oil filler can on the left cylinder. Oil is sprayed on the cylinder, my left leg, and the saddle bag. A hint: there has been oil pooling on the top of the oil filler cap on the left cylinder. Last service time I had them replace the gaskets on that little black plastic plug. The behavior did not chance.

 

Can someone offer some insight into what I am experiencing? Is this typical of this era of oil head? I appreciate any comments.

 

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I have a 2004 R1150RT with 22K miles. Ever since I got it - second owner - it has consumed oil at the rate of about a liter every 1,000 miles. Some of the oil appears to be released from the oil filler can on the left cylinder. Oil is sprayed on the cylinder, my left leg, and the saddle bag. A hint: there has been oil pooling on the top of the oil filler cap on the left cylinder. Last service time I had them replace the gaskets on that little black plastic plug. The behavior did not chance.

 

Can someone offer some insight into what I am experiencing? Is this typical of this era of oil head? I appreciate any comments.

 

It's fairly common. You need to replace the big o-ring on the outside of the insert. I happen to have a few spare o-rings. Donate $5 to the site and I'll drop one in the mail to you.

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pdxstriper

Thanks for the great responses. First thing I will do - after this weekends big ride - is share this feedback with my repair guy. The bike has to go in for it's 24K mile service soon and I want to keep him in the loop.

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MontanaBud

When I told the dealership parts department that I wanted to order the oil filler cap, base insert, and both O-rings because of oil leakage, he told me the hard parts (cap and base) almost never go bad, and all I should need were the O-rings. So I ordered and replaced the O-rings, but it continued to leak.

 

This Spring I ordered all four parts online, installed them, and haven't had a hint of oil leakage since.

 

These parts are so inexpensive, it's well worth it.

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I have a 2004 R1150RT with 22K miles. Ever since I got it - second owner - it has consumed oil at the rate of about a liter every 1,000 miles. Some of the oil appears to be released from the oil filler can on the left cylinder. Oil is sprayed on the cylinder, my left leg, and the saddle bag. A hint: there has been oil pooling on the top of the oil filler cap on the left cylinder. Last service time I had them replace the gaskets on that little black plastic plug. The behavior did not chance.

 

Can someone offer some insight into what I am experiencing? Is this typical of this era of oil head? I appreciate any comments.

 

I have pretty much the same symptoms but without the spraying oil. Can someone describe how to replace the insert? Pry it out with a screwdriver? Turn it out with your fingers? Yank it out with a 10lb slide hammer?

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The base insert is plastic so carefully pry it out evenly using a pocket screwdriver or two.

Inspect the insert for missing chunks or cracks.

 

If ok, put the new o ring in place, use a little spit on the o-ring and while pushing down on the insert with one thumb, carefully poke the o-ring around a few laps with that pocket screwdriver until the insert seats.

 

For the PD bikes, we would replace the filler cap o-ring every minor , the base o-ring every major.

Police Officers are real touchy about their expensive leather boots.

 

We're talking plastic so maybe every 24k miles or so you should treat yourself to a new cap and or insert.

For the price of one of the machined caps, you can buy a lot of o-rings and plastic. Some even require their own size o-ring, so now what?

 

 

 

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When I told the dealership parts department that I wanted to order the oil filler cap, base insert, and both O-rings because of oil leakage, he told me the hard parts (cap and base) almost never go bad, and all I should need were the O-rings. So I ordered and replaced the O-rings, but it continued to leak.

 

This Spring I ordered all four parts online, installed them, and haven't had a hint of oil leakage since.

 

These parts are so inexpensive, it's well worth it.

 

I think you had an unusual case. Folks, this has been going on for years. The vast majority of time you only need to replace the big o-ring around the outside of the insert. If you replace it with a fancy Viton o-ring in all probability you will never have the problem again.

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If you replace it with a fancy Viton o-ring in all probability you will never have the problem again.

 

Is ther a part number or source for this Viton o-ring? I just keep a bunch of the stock ones in... uh...stock.

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If you replace it with a fancy Viton o-ring in all probability you will never have the problem again.

 

Is ther a part number or source for this Viton o-ring? I just keep a bunch of the stock ones in... uh...stock.

 

See post #3. I bought mine off eBay I think.

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If you replace it with a fancy Viton o-ring in all probability you will never have the problem again.

 

Is ther a part number or source for this Viton o-ring? I just keep a bunch of the stock ones in... uh...stock.

 

See post #3. I bought mine off eBay I think.

 

Donation sent. I love win-win situations :thumbsup: i will PM you my address.

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Looking at O ring compatibility charts, I would be surprised if you saw any noticeable difference between the stock O ring and a Viton item.

You may consider sourcing a SLIGHLY larger size. So, if it is a Metric 18mm diameter x 4mm cross section, see if you can source an 18 x 4.5 CS O ring.

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SAAB93driver
Consider the NON BMW http://www.wunderlichamerica.com/ machined aluminum with high quality O-rings as a replacement, excellent piece of work and it's a metal screw in plug, not that 1/4 turn non-sense BMW uses.

 

This is a great alternative too. Had one since late 90's transferred between 3 oil heads.

 

http://www.bmwmotorcycleaccessories.com/BME-Oil-Head-R1100-R1150-Billet-Replacement-Oil-Filler-Cap-MT-513-045A.htm

 

 

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foundationapps

Ooopsss, my mistake on the wonderelich plug. The one I bought and use IS from the above link (Creative Cycle Concepts), not the Wunderlich plug.

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Looking at O ring compatibility charts, I would be surprised if you saw any noticeable difference between the stock O ring and a Viton item.

You may consider sourcing a SLIGHLY larger size. So, if it is a Metric 18mm diameter x 4mm cross section, see if you can source an 18 x 4.5 CS O ring.

 

Define noticeable difference. I am testing for longevity. For $5, it's worth the tuition.

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OK I'll define it.

There is no difference for the application which we are using it for.

below is the compatibility chart and you'll see that for engine oil,

The OEM O ring is probably Nitrile (Buna-N).The performance of the Viton (Fluorocarbon FKM)O ring in this static application affords no benefits. It has a similar hardness and both O rings are excellent for sealing in hot oily environments.

If it were a braking system, then the above is NOT true. Buna-N is not good with brake fluid.

 

 

http://www.sealingdevices.com/documents/oring_chemicalcompatibility.pdf

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