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Thread: HELP! just rebuilt engine...not firing

  1. #1
    Join Date
    22nd September 2006 - 11:26
    Bike
    RMZ 250
    Location
    Auckland
    Posts
    543

    HELP! just rebuilt engine...not firing

    Hey guys.

    I've finally rebuilt my CR250. I got the cylinder repaired at Wild West Honda (big ups to these guys, repaired my cylinder and fixed my powervalve for $175 with great customer service) and purchased a wiseco pro-lite piston kit. Installed it all last night and put the rest of the bike together today.

    Now comes the bad part, kicking over nicely with good compression, but its not firing at all. When I got the bike it always started on the first kick.

    The question I have is how long does it normally take to kick over the bike so it starts after a rebuild? I've been kicking her over with no sign of life and now the bottom of my feet are bruised and sore...gotta get boots!!

    Now before the engine seized up it didn't fire at all and after about 5-10mins of kicking her over the powervalve fell into the cylinder (wild west said it should never have happened and don't know how it did)...and I'm worried that the same thing is going to happen again.

    I've tried checking the spark but its hard to kick her over while holding the plug against the engine and looking if there is a spark (is it normally a bright spark?)

    Any ideas is more then welcome...good and bad

    I'd also like to thank everyone that has helped me since the engine seized, I'm a stubborn bastard and prefer to do things myself without help...but now I'm at my wits end...if I can't get her firing I think I'm just going to sell the damn thing and go back to road bikes (in case you don't know the bike seized on my after my first ride...a whole 30 mins)

    Sorry for the long post...just desperate for help now.

    Cheers all,
    Gus.

  2. #2
    Join Date
    21st September 2006 - 21:35
    Bike
    Kawasaki ZX1100 Turbo
    Location
    Auckland
    Posts
    3,100
    errr have you put gas in it?
    "Speed has never killed anyone. Suddenly becoming stationary - that's what gets you."
    Jeremy Clarkson.

    Kawasaki 200mph Club

  3. #3
    Join Date
    22nd September 2006 - 11:26
    Bike
    RMZ 250
    Location
    Auckland
    Posts
    543
    Quote Originally Posted by Disco Dan View Post
    errr have you put gas in it?
    Yeah all gassed up

  4. #4
    Join Date
    17th July 2006 - 13:53
    Bike
    2006 CR250R
    Location
    Gisborne
    Posts
    2,090
    have you made sure your engine stop switch isnt shortin on when its not meant to be? this can be a easy fix reason why a lot of bikes wont spark.


    is the spark plug getting moist with all the kicking?

  5. #5
    Join Date
    2nd October 2005 - 00:47
    Bike
    CR250
    Location
    Papamoa
    Posts
    3,993
    Put a new plug in it.

  6. #6
    Join Date
    3rd February 2004 - 08:11
    Bike
    1982 Suzuki GS1100GK, 2008 KLR650
    Location
    Wallaceville, Upper hutt
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    Blog Entries
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    If youhave the plug out you should be able to spin it over by hand using the kickstart. One hand holds the plug against the head, the other pushes down on the kickstart - if your ignition is any good you should be able to see a spark
    it's not a bad thing till you throw a KLR into the mix.
    those cheap ass bitches can do anything with ductape.
    (PostalDave on ADVrider)

  7. #7
    Join Date
    22nd September 2006 - 11:26
    Bike
    RMZ 250
    Location
    Auckland
    Posts
    543
    Its ALIVE!!!!!

    Well, managed to check the spark, it was all good, plug was wet from fuel so that was fine...I just couldn't think of what was wrong...until a mate came over and suggested taking the air filter out and kicking her over....kicked her over and she fired right up.

    What had happened was, after the last ride, my mate who was driving suggested we go to wash world after the ride when she died...turned out he used a wax wash on the bike and clogged up the air filter with wax!!!! no air was getting through.

    going to do the break in today so she's all ready for next weekend.

    Thanks all for the advice of what to do.

  8. #8
    Join Date
    17th July 2006 - 13:53
    Bike
    2006 CR250R
    Location
    Gisborne
    Posts
    2,090
    well thats an unusual problem! well done.

    as for me, im off to woodhill.

  9. #9
    Join Date
    17th April 2007 - 11:05
    Bike
    CRF250R
    Location
    Taranaki
    Posts
    553
    Well done glad too see it is possible to resurect a f*&ked engine for not alot
    Just remember to keep that new filter clean and wax free

  10. #10
    Join Date
    2nd July 2007 - 16:38
    Bike
    2007 CR250 and 125Reaper Pitbike
    Location
    Dunedin
    Posts
    51
    Thats dead right mate-filters are a must and only work when clean.
    Always understate and over deliver !Never overstate and under deliver.

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