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2012 Griso 8V SE oil leak

Discussion in 'Griso-Bella Chat & Tech' started by ChappyBoffins, Aug 12, 2019.

  1. ChappyBoffins

    ChappyBoffins Just got it firing!

    Jun 28, 2014
    Likes Received:
    Williamson Co, TN
    Hello again everyone. So I’ve got another oil leak and I wanted to share some photos in case any of this looked familiar and to see if anyone had some advice.

    I took my bike out on a hot day for about a 6 hour ride. It went mostly well but at our first stop I noticed there was some oil leaking out of or onto a connection on the exhaust manifold. We let it cool down for about 20 minutes and the leak slowed and the smoke dissipated. We then decided to ride on. All day the bike did like to want to stall right after I started it. I had to hold the throttle open to about 1500 rpms for about 2 minutes to keep this from happening. After the 2 minutes it was fine. The bike didn’t smoke anymore and I didn’t notice any dripping oil under the bike at any of our other stops.

    I went to ride it to work 2 days later and found a small puddle underneath it with a couple more areas with drips of oil hanging off of them. I’m thinking there’s a leak higher up that is spurting out and trickling down to the areas I’ve photographed. My plan is to spend some time observing the engine closely while it idles. Otherwise I’m at a loss.


    Could the stalling after start be related to the oil leak or are those 2 separate issues?

    If oil is leaking out, should I ride it into my service center 40 minutes away or have it towed?

    Also a friend said my fuel line probably needs replacing, image should also be in the album, are they correct?

    As always, thanks in advanced for any advice anyone can give me.

  2. kiwi dave

    kiwi dave GT Reference

    Oct 28, 2008
    Likes Received:
    Auckland, New Zealand
    The line with the blue device (it's a one way valve) is the breather for the tank. I dismantled mine (heat in hot water) and removed the innards after I suffered tank suck.

    The rest of your photos look fairly normal to me after a six hour ride in hot weather. You will need to clean them up to determine whether they need further attention.
  3. john zibell

    john zibell Moderator Staff Member GT Famiglia

    Oct 28, 2008
    Likes Received:
    Huntsville, AL
    To expand on what Kiwi Dave said, you need to clean the bike thoroughly as when riding air currents will move oil around. Once clean, then run the bike stationary, but you probably should aim a fan at the cylinders. Hopefully you will be able to find the source.
  4. GuzziMoto

    GuzziMoto GT Reference GT Contributor

    Nov 7, 2008
    Likes Received:
    B'more, Md
    Make sure you are not over filling the engine oil. Check in the airbox for oil. Too much oil in the sump tends to pump oil out the breather an from there it can go to the airbox or elsewhere.
    That fancy fitting at the bottom / back of the engine sump is a return line from the oil breather system. Why it is so stout and HD I don't know. The oil could be directly from that fitting if it is leaking. That happens. But it could be running down that line and dripping from there instead. See if the line above is wet. You can use talcum powder to look for wet oil. Or a white rag. Or a clean finger.
  5. V700Steve

    V700Steve High Miler GT Contributor

    Dec 8, 2008
    Likes Received:
    Atlanta area, GA
    +1 on what has been said. I'd cut back the 5/16" fuel breather line & drill through or replace blue valve w/fitting. I would just snug up fitting on back of sump, check it once in awhile. I would look over all the breather system hoses for cracked rubber, it happens.
  6. Bob Clark

    Bob Clark Just got it firing! GT Famiglia

    Jul 4, 2018
    Likes Received:
    Northbridge, Massachusetts, USA
    Also check the oil breather blow by tubes located to the top rear of each cylinder head behind the injectors. The rubber cracks and causes leaks, they all do this. Part #978765
  7. Mackers

    Mackers Cruisin' Guzzisti GT Contributor

    Oct 27, 2008
    Likes Received:
    Victoria, Australia
    My Breva 1100 had a leak from the oil return line at the back of the sump. It dripped off the fitting. The hose had perished where it joined the fitting. Had it replaced at a hydraulic hose shop.

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