dr is blowing alot of smoke on start up

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This topic contains 11 replies, has 0 voices, and was last updated by  Greg 10 years, 10 months ago.

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  • #103765

    daniel lewis
    Member

    hey guys. I took the top end off the dr650 today it is blowing a lot of smoke on start up. so the head, barrel and piston are out it all looks fine to me apart from some light scratches in the barrel.

    my engineer mate tells me it’s more likely the rings then the valve stem seals. I have ordered the seals and will take the head , barrel and piston into him to have a look at.

    so it looks like new seals and maby new piston.

    only 2 problems on the pull down. ill need a new crank seal (this is very common the net tells me). and more disturbing is the 4 bolts that hold the head on about 1/2 way on each thread looks half striped im not sure I should reuse these. can anyone tell me if that is normal it looks like its the 1st time the head has been off this bike only 30k on the clock.

    ill through some photo’s on soon

    #255006

    daniel lewis
    Member

    it looks a little striped

    20140316_163251_zpscba56cd8.jpg

    20140316_163350_zps1441ee4c.jpg

    after I cleaned it up

    20140316_163310_zpsc6bac819.jpg

    a couple of the barrel looks good to me

    20140316_163427_zps7123ab44.jpg

    20140316_163438_zps3a730085.jpg

    20140316_163448_zps6ed3831b.jpg

    20140316_163500_zps3ea92986.jpg

    20140316_163509_zps41d5e6c3.jpg

    #255007

    Brett
    Member

    Barrel looks quite glazed look for dust on the in take side
    look for any paste / dust behind the oil ring expander ring
    check the ring clearances on the piston lands

    #255008

    daniel lewis
    Member

    yeah it all looked clean but I do think it has been alittle dusted as I was using a k&n air filter I would not recommend using these as behind the filter there was a little oily dust

    #255009

    usi
    Member

    I would get new head bolts and a procycle 790 kit while your there :woohoo:

    #255016

    Greg
    Member

    Valve guides and valve seals. The engine stopped, oil runs past the seals, down the guides and blows smoke on start up. It’s not rings, it doesn’t blow smoke on acceleration. The valve seals and guides are a common thing with DR 650s from what I have seen and read. Although hard with the pictures that bore looks like it needs some attention. New rings, a head service and new head bolts and happy days.

    Yeah those K&N filters are shit, dusted a bike at the four day in 06 using one of them

    TB

    #255010

    daniel lewis
    Member

    yeah I agree TB il see what my engineer says tomorrow. but no more k&n that’s for sure

    #255011

    daniel lewis
    Member

    usi the 790 kit would be stupid im shredding sprockets as it is. its over tuned as it is. I think that’s why im having problems :) but I have been pondering :))

    #255012

    daniel lewis
    Member

    the bike is back together all went well its not that hard of a job id recommend do this your self then paying a mechanic. now to wear the motor in :)

    #255013

    Dwayne O
    Member

    Good work Fuchsy,,
    Nothing like the satisfaction of self conducted maintenance I reckon ;)

    There are obviously some limits to how far you can go with some repairs/rebuilds (dependant on ability and know how) , but full points for getting in and having a go mate B)

    #256117

    Greg
    Member

    Good on ya Fuckiske, Fuckike, Mother Fucjekise oh whatever your name is :laugh: :laugh: :laugh:

    Well done mate

    TB

    #255014

    daniel lewis
    Member

    yeah thanks guys and its fuchsy TB :) . there Is great satisfaction in doing a job like this yourself. it was fun and the money I saved I spent on tools so my work shop is pretty tidy now I can do every thing but crack the case and hopefully ill never have to do that :)

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