Blown Head or Base Gasket

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by riceless, Jun 13, 2010.

  1. riceless

    riceless Let's Ride!

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    I think one of those gaskets is gone. I have investigated yet but I had an oil leak, then I saw some coolant mixed in too.
    My question is, will the cylinder come off with the motor in the frame? It looks like the head will... I hope. From what I can see, the leak seems to be up high.

    At first I thought it was coming from the Oil Pressure Sensor.

    [​IMG]


    But that wasn't it.

    [​IMG]
    #1
  2. unaweep

    unaweep Uses lotsa band-aids

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  3. dabracing

    dabracing Been here awhile

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    Front...yes, rear...no.
    #3
  4. Dale950

    Dale950 Long timer

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    You certain it's not the Oil Switch as Ive just done mine and it made a huge mess just likes yours the oil spewed up higher and down the opp side as well
    #4
  5. imgonnasnap

    imgonnasnap Motard wrecker

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    Sucky. Good luck repairing it. Talk to mike (gearheart) about motor work on the 950.
    #5
  6. TrentW

    TrentW MMmmmm....

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    +1

    I've also seen a mess similar to yours and it was the Oil Pressure sensor leaking.

    Clean it all up and check the Oil Pressure sensor again...
    #6
  7. DirtyADV

    DirtyADV Long timer

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    #7
  8. adiablolex

    adiablolex Lost again

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    Hey man, on the first picture it looks like its coming from one of the coolant hoses/clamps looks wet up top.
    I'd be checking everything up there,(one of my clamps was starting losen up and seep slowly at 35k) if nothing found guilty, remove cams and retorque head bolts, give her a nice wash, reasemble and go for another bashing to verify leak.
    Better to get more evidence before you drop the motor

    ....unless of course you've done all that already :bluduh
    #8
  9. riceless

    riceless Let's Ride!

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    Thanks for all the ideas guys. :thumbup
    This weekend I'm gonna investigate further (again).

    I'm hopeful about the oil sensor being the cause. Picked up a new washer today.

    Second choice would be the hoses.

    Next, the gasket and last, the nightmare would be the "Pydon Syndrome". My mileage is 66,000, about the same as his was when it happened.

    I'll let you know what I find out. Thanks again.
    #9
  10. Nowwhat

    Nowwhat I'll Go Second...

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    yeah....yeah....at least yours still has a charge in the battery....:rofl


    Ok...buy a couple 12 packs....2 large meatlover pizzas...crank up some of those tunes of yours and I will come over and help you load that beast into your truck...:deal :freaky
    #10
  11. Desertdweller

    Desertdweller Adventurer

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    Might be the rubber seal on the starter where it attaches to the motor.
    #11
  12. Desertdweller

    Desertdweller Adventurer

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    The front cylinder can be pulled off by taking out two of the motor mount bolts, and allowing the engine to adjust downward (hang) under its own weight until the cylinder clears the frame.

    I haven't done it myself (yet), but that's how the chief mechanic at Malcolm's told me it could be done. Sounds a lot easier than separating the motor from the frame.
    #12
  13. Dale950

    Dale950 Long timer

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    If it is the oil switch , it most likely be the switch it self Riceless not the washer , you will be able to blow air through the unit as the ceramic material will be cracked . I found you need a long socket too to take it out .
    #13
  14. 9nine0

    9nine0 Formally NineFive0 V2

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    I can understand how this is easier and less hassle but you have already done 95% of the work to pull the complete engine. With the engine out of the frame, it is SO much easier to work on everything, clean everything and inspect other areas to make sure that they are fine. Now you can lube, grease and check over the complete engine and chassis.
    #14
  15. riceless

    riceless Let's Ride!

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    The answer to this one is easy. Because I prefer riding to wrenching. Riding is a sickness for me...an addiction...a gotta have it kind of thing.

    As evidence of this, If the leak is the switch itself (as suggested by Dale950 thanks Dale) and I don't have a new one to put back in, I'm screwin' in a bolt and goin' for a ride. :ricky

    Oh and thanks also to Desertdweller for the starter seal and pivoting the motor ideas. I'll check the starter for sure.
    #15
  16. Desertdweller

    Desertdweller Adventurer

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    No problem. Hope you find out its an easy fix.

    #16
  17. Metrotexual

    Metrotexual Been here awhile

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    I've been thinking about this for a couple of days now. If it were me I would go ahead and pull the engine. Although you may be able to get at it by pivoting it down, I think it's the piece of mind that you get from knowing that you are doing it right. Also, you get a chance to knock the swingarm pivot bolt out and re-grease it. It's not much more labor to drop the engine from where you are at, really. Oil lines, battery box and all those accoutrements, a few other odds and ends.

    I'm not saying that the other way is wrong at all, I just don't know about it and if it will yield an easier fix. I find that when the engine is out of the bike and on my bench it is just easier to work on.
    #17
  18. riceless

    riceless Let's Ride!

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    It looks like Dale950 was right. It is the oil pressure switch that failed. That is good news. The bad news is nobody around here stocks that part so ordered it. Now it's back to the garage to look for a bolt that will fit until the switch arrives. Thanks again for the help fellas. :ricky
    #18
  19. twodollardoug

    twodollardoug the calimesa kid

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    thats good news. an easy fix. i keep a spare in my tool compartment. you should be careful putting a bolt in there. i think its a tapered thread. and if you crack the case then you might be doing a case replacement.:cry
    #19
  20. scorpion

    scorpion Two arm bandit

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    Nice :clap
    Didnt I say it would be something easy :1drink
    I think it'll take a lot more than that to bring that bike down.
    #20