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Why would I have oil in my pick up coil cover.I stopped to get gas and noticed a oil drip so back to the garage I went. Pulled the cover and the is oil it in the bottom not much but enough to leak out I guess. Any sugestions?
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If it is in the cover itself, the crankshaft seal is leaking. Even a good crankshaft seal can slightly leak if the crank bearings have a little slop in them. Mine does the same thing. I got tired of the oil on my left boot so I put a dab of RTV on the drip hole on the bottom, problem solved for now, YMMV.2H7 (79) owned since '89
3H3 owned since '06
"If it ain't broke, modify it"
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Do you think I should be worried about it ita a pretty good leak. Does the case have to be split to change the seal.Comment
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No, the case doesn't need to be split, a standard automotive seal can be used (32x48x8). The Yamaha seal will require splitting the case. Define pretty good leak. Mine leaks about a tablespoon every 2K miles.Originally posted by XJfan1 View Post2H7 (79) owned since '89
3H3 owned since '06
"If it ain't broke, modify it"
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I noticed about 4 drips on the ground at the gas station. And about a teaspoon when I got homeComment
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Right under where that drips, you have an oil galley plug with an O-ring that can go bad. This oil galley is a tube that goes all the way across your motor and supplies oil pressure to a series of holes that lead up to your crank bearings, so this does get considerable oil pressure to this plug. Most of the time, if you have a crank seal leaking, it will get oil slung all over the inside of the cover, but not always. Since it is inside the cover, that's what I'd likely point to also.. just don't ignore the possible galley plug.
You don't even have to have a wobbling crank to get the seals leaking. Those things are holding back some light oil pressures with 30+ year old rubber. If you can find this brand of seal, they have a double lip that contacts the crank and I've had very good luck with them.
Try your hardest to be the kind of person your dog thinks you are.
You can live to be 100, as long as you give up everything that would make you want to live to be 100!
Current bikes:
'06 Suzuki DR650
*'82 XJ1100 with the 1179 kit. "Mad Maxim"
'82 XJ1100 Completely stock fixer-upper
'82 XJ1100 Bagger fixer-upper
'82 XJ1100 Motor/frame and lots of boxes of parts
'82 XJ1100 Parts bike
'81 XS1100 Special
'81 YZ250
'80 XS850 Special
'80 XR100
*Crashed/Totalled, still ownComment
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It that oil galley plug under the coil cover or in side under the pickup coil plate. The oil was running down the back plate then into the bottom if the cover.Comment
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I am interested in this topic as well, since my bike was leaking enough oil today that I could watch it cover the toe of my boot and slowly work itself into a stream down the back of the boot. I assume I cant just pretend this is normal as well?Joab
"If nothing else, it will be interesting..."
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1979 XS1100SF
1972 XS2 650
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Ozark, AlabamaComment
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Sloppy crank bearings were mentioned. Would that make a noisy motor like it does in a car. My motor is super quiet no motor rattles or knocking sounds like a sewing machine.Comment
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The galley plug is underneath the cover on the outside of it.Try your hardest to be the kind of person your dog thinks you are.
You can live to be 100, as long as you give up everything that would make you want to live to be 100!
Current bikes:
'06 Suzuki DR650
*'82 XJ1100 with the 1179 kit. "Mad Maxim"
'82 XJ1100 Completely stock fixer-upper
'82 XJ1100 Bagger fixer-upper
'82 XJ1100 Motor/frame and lots of boxes of parts
'82 XJ1100 Parts bike
'81 XS1100 Special
'81 YZ250
'80 XS850 Special
'80 XR100
*Crashed/Totalled, still ownComment
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No you can't......Originally posted by Joab View Post
The Yamaha crankshaft end seals have a lip in the middle of them which locates in a groove in the crankcase halves. This means splitting the cases if you insist on using an OEM seal (which I wouldn't, personally). I would use the double-lip automotive seal already mentioned. As an experiment, on a couple of scrap engines I had, I removed the seals without splitting the cases, just to see how to do it on my own bike if it ever proved necessary. I used a screwdrived to pry out the centre of the seal, making sure I got the fine spring out that lurks in the seal. Then I used a bit of judicously applied brute force with a wider screwdriver to force the outer part of the seal out. It cracked off the lip that holds the seal in the groove, leaving some it in place. With a bit of fiddling, I got it all out, although I suspect it wouldn't matter much if it were left in the groove because the new seal will hold it in there. Then it's just a case of tapping a new seal in and using a correctly sized socket to line up with the outer ring of the new seal in order to tap it home with a mallet.
Splitting crankcases is a major job which requires some special tools, a great workshop, excellent tool kit, plenty of time and a lot of knowledge.
It's been mentioned on here before that people have used the automotive seals with great success....Last edited by James England; 03-15-2012, 02:20 PM.XS1100F 1980 European model. Standard. Dyna coils. Iridium plugs. XS750 final drive (sometimes). Micron fork brace. Progressive front springs. Geezer regulator/rectifier. Stainless 4 into 2 exhaust. Auto CCT (Venturer 1300) SOLD. New project now on the go. 1980 European model.Comment
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Its raining today so I'm doing some bike maintenance. So I decided to tear the stator apart and put in the automotive seal. But it looks like the po best me to it. The head if the bolt is toast. I have a couple things else that might work but. I'm wondering if that bolt is reverse thread. Im guessing its not. But being the head is wallered out I'm wondering if the po tried to turn it the wrong way. I changed the o ring on the oil galley plug do I have to prime that being the oil ran out of the tube. Pull the plugs and run the starter or somthing?Comment
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No need to prime. replace the plug BEFORE you turn the engine over!
You will have oil ALL OVER if you try to prime it.
Ray Matteis
KE6NHG
XS1100 E '78 (winter project)
XS1100 SF Bob Jones worked on it!Comment
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