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Oil leaking from exhaust

Posted: Thu Jun 19, 2014 9:58 am
by Lastwachter
1978 GL1000

So just as I was finishing up with the last thing on the list of problems with the Goldwing to get her road worthy a new problem arose.

She is leaking oil out the left exhaust.
Symptoms
-Oil dripping down onto the center stand where the sportster muffler attaches to the headers. Creating puddle, so its a decent amount.
-Some oil (i believe) leaking where the headers attach to the engine (much less than at the end of the headers.
-Smoke billowing out of the exhaust. Getting worse the longer I rev. Some oil residue at tip of exhaust as well.


There is no oil in the coolant overflow
The oil has NOT been overfilled. Its half way from full and low like Randakk suggests.
It has been on the center stand for over a week (not on the side stand)
It did not do this before. I have driven it several times a total of 35 miles while working out other issues on the bike before this started happening. So it is not just residue oil in the headers or exhaust and it is not from being on the side stand.

I read this could be a head gasket leaking. Anyone way to confirm or deny that?
Any other suggestions?
Thanks guys!

Re: Oil leaking from exhaust

Posted: Thu Jun 19, 2014 10:11 am
by WingAdmin
It sure sounds like a head gasket - that amount of oil doesn't sound like a valve seal. I would do a compression test, and if possible, a cylinder leakdown test to see if one of the cylinders on that side is showing an obvious leak.

Re: Oil leaking from exhaust

Posted: Thu Jun 19, 2014 10:14 am
by Lastwachter
I will do that today thanks.

I did a compression test a few days before this problem started and I was getting
1-170
2-170
3-165
4-165

but now with the leak I'm guessing I could be getting some new numbers.

Re: Oil leaking from exhaust

Posted: Thu Jun 19, 2014 1:45 pm
by virgilmobile
Also,when you check the compression,look at the spark plug condition....are they oil soaked?

Re: Oil leaking from exhaust

Posted: Thu Jun 19, 2014 2:05 pm
by Lastwachter
virgilmobile wrote:Also,when you check the compression,look at the spark plug condition....are they oil soaked?
I just cleaned and put them back in the bike to confirm I fix the last issue (too many volts). I will run the bike for a bit and get the smoke going and then check them as well and get back to you.

Re: Oil leaking from exhaust

Posted: Sat Jun 21, 2014 11:04 am
by spookytooth
This thread interests me. My right bank has recently started leaking similarly. I also get a white puff of smoke smelling of coolant at startup. Without going any further I know mine is a head gasket....

Re: Oil leaking from exhaust

Posted: Tue Jun 24, 2014 5:19 pm
by Lastwachter
Ok, so I got the bike running until I had a small puddle underneath and plenty of smoke out of the left exhaust. I then pulled the plugs and #4 looks like it had oil on it. I did a compression test on #2 and #4 and both were still fine (between 165-170).

Am I right in assuming it is the head gasket and I need to purchase a new one for the left side? Randakk says I should go OEM.

Comments, advice, etc welcome.
Thanks!

Re: Oil leaking from exhaust

Posted: Wed Jun 25, 2014 1:40 pm
by WingAdmin
That would be my guess as well, and yes, you can't go wrong with OEM for the head gasket.

Re: Oil leaking from exhaust

Posted: Wed Jun 25, 2014 3:28 pm
by virgilmobile
I've been reading this...I am trying my best to analyze the problem...
I'm asking myself how can that much oil get into the cylinder and it still have good compression...
A blown head gasket...As i think...It would result in low compression,oil in the water,water in the oil,overheating....
I just can't "see" a connection between a "bad" head gasket and the large amount of oil dripping out the exhaust...

Before you rip it apart,take a look at the crankcase vent and holding canister...I suppose if it's plugged, pressure buildup could force oil past the (old) valve guide seals..

Re: Oil leaking from exhaust

Posted: Mon Jun 30, 2014 2:27 pm
by Lastwachter
Thanks for the suggestions. The vent is not plugged and my 78 was made before they started including the canister.

Re: Oil leaking from exhaust

Posted: Sun Jul 06, 2014 8:49 am
by Lastwachter
Well I just finished replacing the head gasket with an OEM and it is still leaking...the same amount, just as quick. It didn't seem to make a bit of difference.

Re: Oil leaking from exhaust

Posted: Sun Jul 06, 2014 10:33 am
by virgilmobile
I am sorry that it took this ammount of effort to confirm what I was trying to analize.
Now the good news/bad news.
You have a extra head gasket(good)
Still haven't confirmed the cause(bad)
Assuming everything is in its proper place,including the 2 "O" rings,it's leaking inside and not dripping from the gasket area,then my only guess is a cracked head near a valve.
I cannot determine anything without testing but going by what you have,it's the only explanation for oil in the exhaust.
This problem seems to be unique.Theres almost nothing reported like this on a boxer engine.
You could throw another head on it but I really recommend finding where the oil is coming from.
Removing the intake and exhaust valves,clean and inspect the cavity.
Have it magnafluxed,pressurize the oil passage with water...whatever it takes to find the cause.

Re: Oil leaking from exhaust

Posted: Sun Jul 06, 2014 10:44 am
by Lastwachter
virgilmobile wrote: Assuming everything is in its proper place,including the 2 "O" rings,
What two o-rings are we talking about?

Re: Oil leaking from exhaust

Posted: Sun Jul 06, 2014 11:37 am
by virgilmobile
On the block at the top there is a oil restricter insert.It has 2 "O" rings.the smaller one sets in the block the larger one fits at the head gasket.
As I remember.There's notations about it.

Re: Oil leaking from exhaust

Posted: Tue Feb 03, 2015 1:52 pm
by Lastwachter
Ok, here is my update.

-I swapped the head with a "new" one. At that same time I once again replaced the head gasket, valve seals and 2 o-rings for the oil orifice. It is still leaking oil same as always.

I was told by other bikers (not Goldwing Owners), that it could be...
-leaking around the pistons. Piston rings.
-A warped or scored surface on the engine side.

Are these reasonable? Should I be looking at pulling and rebuilding the engine and possibly having it resurfaced?

Any help on what my next step should be would be greatly appreciated.

Re: Oil leaking from exhaust

Posted: Tue Feb 03, 2015 3:02 pm
by WingAdmin
Lastwachter wrote:Ok, here is my update.

-I swapped the head with a "new" one. At that same time I once again replaced the head gasket, valve seals and 2 o-rings for the oil orifice. It is still leaking oil same as always.

I was told by other bikers (not Goldwing Owners), that it could be...
-leaking around the pistons. Piston rings.
-A warped or scored surface on the engine side.

Are these reasonable? Should I be looking at pulling and rebuilding the engine and possibly having it resurfaced?

Any help on what my next step should be would be greatly appreciated.
Do a compression (both wet and dry) and a leakdown test. That will tell you if you've got leakage around the pistons.

Re: Oil leaking from exhaust

Posted: Sun Feb 08, 2015 3:48 pm
by Lastwachter
Did a compression test and showing 155 on all 4 cylinders.

leak down test using a harbor freight tester. Shows less than 10% on all cylinders except #4 which shows 15%+ and the sound of the leak I can best tell coming from the flywheel opening where I find TDC.

The spark plugs also show the same that #4 is wet so the oil seems to be coming from #4.

So at this point I'm thinking piston rings or cylinder is the issue. because remember I swapped heads and replaced gasket, valve seals and orings again. Please let me know what you guys think before I go and pull the motor.

Thanks guys!

Re: Oil leaking from exhaust

Posted: Sat Feb 14, 2015 8:47 am
by f1xrupr
Ya know....I just can't see that cylinder pumping so much oil that it runs out of the tail pipe, and not smoke like a Hadam Whosane oil well, or, most likely, not able to run at all....is it running all 4?...smoking like a freight train?...man that's weird...!

Re: Oil leaking from exhaust

Posted: Sat Feb 14, 2015 9:53 am
by Lastwachter
It is running all 4. I would pull #4's plug while it was idling and it would start to bog down and stall. So 4 was definitely contributing.

She was smoking but not a HUGE amount. But I guess that comment is relative.

At this point I am trying to loosen and lube rings before I have to pull the motor. So I have...

-filled the cylinder with MMO and let that sit over night.

-filled the cylinder and motor with diesel let that sit over night and drained it.

-filled the motor with a 50/50 of oil and ATF as suggested by Randakk. Let that sit then ran it at 3500 for 20min and then drained it while the engine was still hot.

-Now I am waiting on my oil filter adaptor to be able to put new 10w 40 in it and see how she runs.