Drain hole leak.

Discussion in '6th Generation 2002-2013' started by mofo, Aug 13, 2021.

  1. mofo

    mofo New Member

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    Seems my bike issues won’t end anytime soon. lol
    Noticed a slow leak some time ago. A small drop of oil a the bottom of the fairings that leaked every couple of days or so onto the floor.
    Finally got the time to check and found out that is not oil, but possibly coolant. Comes out of the drain hole where the engine makes the “V”
    Did some research here for my issue but came up empty handed before opening a new thread.
    Looking for advice on why it is leaking and what doI need to do to fix it so I can get back to riding soon.
    Oil level is normal with recently changed oil and filter. Coolant level is low in the reservoir due to me spilling some when working on something else, but it was at the low level when I stopped riding it due to an electrical problem. The electrical problem has been fixed.
    Hope I did the right thing uploading pictures.
    Thank you all. 8A5BE203-6830-45E3-90EC-1A49C285182F.jpeg 8A5BE203-6830-45E3-90EC-1A49C285182F.jpeg 163335F7-7FFD-43A2-B0F7-039ECD9443E7.jpeg 4AA9DCA9-F7D2-4611-AB93-CD4BAA1D90B0.jpeg 163335F7-7FFD-43A2-B0F7-039ECD9443E7.jpeg 8A5BE203-6830-45E3-90EC-1A49C285182F.jpeg
     
  2. mofo

    mofo New Member

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    By the way, it’s an 04 800A with 85K miles on it.
     
  3. raYzerman

    raYzerman Member

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    If it wipes up cleanly with water, then likely coolant. If it's oily takes a solvent like naptha or mineral spirits, then it could be oil.
    Wipe it off and see what comes back and how much. If same amount comes back, then I know you're itchin' to pull them throttle bodies aren't ya.

    Coolant reservoir shouldn't affect anything as long as it's not empty. One can mysteriously lose a little coolant over time via minor seepage, but when cold fill it to the max line. Monitor that over the next while and check again when cold. Should stay the same. Check again after another hot/cool cycle....
     
  4. mofo

    mofo New Member

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    I’m sure is coolant. Cleaned with brake cleaner because I had no water available, but is dry and flakey and came off very easy.
    CA44AE4A-9CD7-4427-924E-96349B53CA2D.jpeg
     
  5. jstehman

    jstehman New Member

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    That's a strange color for coolant..

    Judging by the dry line, it probably is coolant or dirty water serving as coolant.

    Under the throttle bodies are the thermostat and the plumbing for the fast idle wax unit. Any chance one of those hoses are leaking?

    What does the rest of your coolant look like?

    Sent from my SM-N950U using Tapatalk
     
  6. squirrelman

    squirrelman Member

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    there are large crossover water tubes within the V, and a gasket (O-ring) there may be at fault. so when's the last time you drained and flushed your coolant ?
     
    Last edited: Aug 13, 2021
  7. Diving Pete

    Diving Pete Member

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    . I’m guessing it was a while ago…
     
  8. raYzerman

    raYzerman Member

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    Brake cleaner way to harsh to tell anything..... try the remaining stuff with water....
    You're dying to get those TB's off aren't ya.....:D
     
  9. mofo

    mofo New Member

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    About 7 years. lol
     
  10. mofo

    mofo New Member

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    Not really. lol I work 6 days a week and can only work on the bike an hour or so here and there.
     
  11. mofo

    mofo New Member

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    Will have to check those out. The rest of the coolant looks normal, both in the radiator and reservoir.
     
  12. mofo

    mofo New Member

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    I double-checked where the stain is coming from, it is in fact coming out of the drain hole, also known as weeping hole.
    May be there is a blockage somewhere, may be the water pump seal or the water pump itself is failing?
    Bike does not overheat. It operates at normal temperatures though.
     
  13. raYzerman

    raYzerman Member

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    The leak is under the throttle bodies somewhere, which comes out the weep hole...... the water pump is clear on the other side of the engine down low, so it's not that. Here's kinda what it looks like after you get the TB's off (this is Gen5). Lotsa hose connections, etc. under there. TB Removed.jpg
     
  14. mofo

    mofo New Member

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    That’s a lot of parts to take off and fix. With only an hour or two available a week it’ll be lots of fun!………not. lol
    But, I have to start somewhere and make it work.
     
  15. mofo

    mofo New Member

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    Finally managed to take the air box off and take a look as much as I can under the throttle bodies.
    Noticed a small leak in a hose I assume is the thermostat, but nothing major other than dust accumulated over the years.
    Taking the throttle bodies off, based on what I what I saw, is definitely beyond my skills. Too may hoses and cables to be able to put back together the right way.
    Unless there’s an easy way? Someone has a video on how to take the throttle bodies off?
    I’m tempted to skip this process and just start riding keeping an eye on the coolant, but I also know it’ll get worst before it gets any better. B78643C2-78E6-466B-A8D8-17FE5C03BAD4.jpeg
     
  16. mofo

    mofo New Member

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    Went and took another look at the bodies. Seems it’s four screws I need to loosen up to remove them. Can someone confirm?
     
  17. Terry Smith

    Terry Smith Member

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    Yes the throttle bodies are just held on by the clamps on the inlet rubbers; you just need a really long phillips head screwdriver and a torch to loosen the four screws on the clamps, then pry the TBs up gently, easier to do when things are warm (the inlet rubers will be softer) . You may be able to leave throttle cables etc attached and just swing the TB's out of the way.

    upload_2021-8-18_9-51-29.jpeg

    If you do this you should consider replacing a few bits while you are in there...thermostat, coolant hoses and there are small o-rings under the alloy elbows bolted to the cylinder head. You probably won't want to do the job again in a hurry. Also, new inlet rubbers will make the refitting job a lot easier.
     
  18. mofo

    mofo New Member

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    Glad you mention Terry. I was thinking that I should change the thermostat, coolant flush and other items while I’m at it.
    Can you put me in the right direction with the parts I should change ? May be part numbers? I don’t really care where I order from, just want to get it done right the first time.
    I had the owners manual in my lap top, but said lap top is trash and can’t access it, will have to play it by ear.
    Appreciate anything you can do for me.
    Jerry
     
  19. Terry Smith

    Terry Smith Member

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  20. mofo

    mofo New Member

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    Since I don’t know what o-rings you mean Terry I’m unable to locate them in the parts number. Thank you.
     
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