My turn!

Are ya having a problem with your rig? We'll try to help. Share your tech tips and experiences here. Dr. Billy Glaser, author of the "Unofficial 750 Ural Service Manual" site myural.com, is moderating this section.
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Here is the place for you to ask questions about or share your experiences about servicing or repairing your Ural or Dnepr. Please post topics concering modifications or accesories in the "Modifications and Acessories" section. Please post oil related questions in the "Oil Threads" section.
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Lmo
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My turn!

Post by Lmo » Thu Aug 15, 2019 1:53 pm

2006 engine

An occasional drop, or three, of engine oil on the floor; dripping from the left side of the exhaust cross-over tube, near the joint with the left header.

It's not dripping off of the oil filter housing and then running down the tube. Best I can come up with is valve guide... leaking through cylinder head to exhaust header. But that's a l-o-n-g shot.

I have no clue how it's getting there.
Lew Morris
Dnepr w/ '06 Ural Drive Train
C5 Power Arc
125/42 jets
Drilled slides/
.030" shims

1973 BMW R75/5 (original owner)
1947 HD FL (long gone, forever regretful)

rivers
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Re: My turn!

Post by rivers » Thu Aug 15, 2019 2:46 pm

Notice any new starting/running issues lately? You blowing any black stuff out the tail pipe? If so it may be carbon sludge loosened by fuel? I've seen spark fail or carbs go wonkey and suddenly run extremely rich. Rich to the point where the unburnt fuel is going out the exhaust and it'll w@$# and dissolve the carbon soot in the exhaust. Usually expelled out the tailpipe but if really soaked can run down the pipe internally and leak at an exhaust connection. Do your drippings feel and smell like oil or like fuel? Usually though there's a really poor running symptom that goes along with. Sounds nuts, but it happens and not saying it's not valve guides. But...worn valve guides/seals can briefly smoke out the exhaust pipe at cold startup and when chopping the throttle at speed.
Only guess I got. :( I'd start with determining if it's oil or fuel and soot.
Joe
014 GU
"I'm lost but I'm making good time."

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Mr Wazzock
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Re: My turn!

Post by Mr Wazzock » Thu Aug 15, 2019 3:32 pm

Have you pulled spark plug for a look-at? If oily could be head gasket fooked. Just guessing mind
Mike H
2016 Ural cT, in glorious terracotta
(aka Oranzhevaya Opasnost, "The Orange Peril")

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Desantnik-VDV
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Re: My turn!

Post by Desantnik-VDV » Thu Aug 15, 2019 5:23 pm

Chemical analysis of that oil is important!
Try matching oil samples from the dipstick and a dripped oil on a piece of parchment paper.
Rub both samples between a clean tumb and a pointing finger and smell the difference.

I don't have a masters degree in chemistry, so pardon me.
w@$# surroundings, dry and try to get a 💧Or a wet spot.
Alex
2007 GearUp - БМД (Боевая Машина Десанта)

The rest is just a History:
2014 Ural M70
1998 Honda f6 GL 1500 Valkyrie Tourer /Champion Escort sidecar
1999 Ural Deco Classic/BMW R100 engine
1980 BMW R100RT (2nd Heart Donor for 1999 Deco for more HP)
1983 BMW R80/7 (1st Heart Donor for 1999 Deco)
2002 Ural Barberian Classic
2003 Honda Shadow ACE
1999 Ural BC (went to US circus in Tokyo to adapt a bear driver)

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Snakeoil
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Re: My turn!

Post by Snakeoil » Fri Aug 16, 2019 7:10 pm

Let's use the KISS principle on this one, Lew. Degrease the bike thoroughly, let it dry overnight and then take for a ride. The oil source will reveal itself.

I like Spray Nine as a degreaser. Available in Home Depot. Buy a gallon. You won't regret it.
Regards,
Rob
Proud member of the Peanut Gallery
2000 Ural Tourist
40 Pilots, 122 Mains
Before you say something stupid, always ask yourself, "What would Harpo say?".

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Lmo
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Re: My turn!

Post by Lmo » Mon Aug 19, 2019 1:48 pm

300+ miles over the weekend. No drip(s) on the floor.... :gahhh:

Not complaining, just at a loss to understand what I was seeing.
Lew Morris
Dnepr w/ '06 Ural Drive Train
C5 Power Arc
125/42 jets
Drilled slides/
.030" shims

1973 BMW R75/5 (original owner)
1947 HD FL (long gone, forever regretful)

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Snakeoil
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Re: My turn!

Post by Snakeoil » Mon Aug 19, 2019 7:31 pm

What about oil film on the engine or tranny? That would be your clue.

But then again, see, a good cleaning fixed yet another mechanical problem. All my bikes and cars seem to run better after a good w@$#ing and w@* job. Why should your vehicles be any different.
Regards,
Rob
Proud member of the Peanut Gallery
2000 Ural Tourist
40 Pilots, 122 Mains
Before you say something stupid, always ask yourself, "What would Harpo say?".

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