Where’s this leaking oil coming from?


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poppadre
Posts: 46
Joined: Sat Jun 18, 2016 10:35 pm
Location: Winnipeg, Manitoba, Canada
Motorcycle: 1981 GL1100

Where’s this leaking oil coming from?

Post by poppadre » Thu Mar 08, 2018 12:26 am



Started up my bike and to my surprise I am getting a lot of oil dripping on the left side under the engine and smoking off the exhaust. Was not like this when I put it away. Is this leak just coming from the valve covers? Is that the only gasket I need to get?
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Aussie81Interstate
Posts: 956
Joined: Thu Nov 27, 2014 2:34 am
Location: Penrith Australia
Motorcycle: 2001 GL1500F6C Valkyrie
1982 CX500 Turbo (restoration project)
1981 GL1100 Interstate (sold)
1988 GL1500 (sold)

Re: Where’s this leaking oil coming from?

Post by Aussie81Interstate » Thu Mar 08, 2018 12:53 am

Your pictures seem to indicate the valve cover gasket - can you carefully tighten the valve cover bolts - see if they need to be tensioned - but be careful-they are easy to strip threads in the head.

You might also need some new seals.

DaveO430
Posts: 694
Joined: Fri Jan 02, 2015 7:28 pm
Location: Amity. Ar
Motorcycle: 2010 GL1800
2004 Suzuki DR200

Re: Where’s this leaking oil coming from?

Post by DaveO430 » Thu Mar 08, 2018 6:21 am

Could be the shifter shaft seal. NO, don't tighten the valve cover bolts unless they are actually loose, they have a stop shoulder on them, you turn them in until they stop and that's it. Lots of them have been broken or stripped because someone thought they could tighten them a little more.

Winnipeg
Posts: 4
Joined: Thu Oct 20, 2016 5:42 pm
Location: Winnipeg Manitoba canada
Motorcycle: 1982 GL1100 I interstate

Re: Where’s this leaking oil coming from?

Post by Winnipeg » Thu Mar 08, 2018 2:32 pm

I get coolant leakage at that exact spot coming from coolant tubes above. Are you sure it’s oil? Only happens during winter storage. Just a thought.

Aussie81Interstate
Posts: 956
Joined: Thu Nov 27, 2014 2:34 am
Location: Penrith Australia
Motorcycle: 2001 GL1500F6C Valkyrie
1982 CX500 Turbo (restoration project)
1981 GL1100 Interstate (sold)
1988 GL1500 (sold)

Re: Where’s this leaking oil coming from?

Post by Aussie81Interstate » Thu Mar 08, 2018 9:31 pm

Wiping under the valve cover with a rag will soon determine if it is oil or something else. Again you can check the tightness of the cover bolts - but as mentioned do it carefully - I had 2 stripped holes on the right hand side which needed to be heli coiled - and I also replaced the old rubbers on the cover bolts with new ones - this made a big difference and stopped the leaks I had very quickly. The reason as mentioned above - if over tightened will cause damage. The old rubbers will not put enough pressure on the cover when the bolt is tightened correctly causing the slow leaks as they have gone hard with age. The same goes for the valve cover gaskets as well - it's worth changing them as well.

Have fun :)

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Hoosier Jack
Posts: 393
Joined: Thu Oct 02, 2014 4:21 am
Location: Terre Haute, IN
Motorcycle: 1982 GL1100 Interstate

Re: Where’s this leaking oil coming from?

Post by Hoosier Jack » Fri Mar 09, 2018 10:52 pm

I'm pretty sure that the torque value on those bolts are 9 ft lbs and that is not much.



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