2004 Factory bike Chrono SM 250 Logo
Trevor Lewis
Trevor Lewis Posted on Jul 26, 2009
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Apache rlx300 wont start spitting back through carb

Quad was working just fine. was out riding for hours stopped for some lunch and then when I tried to start it nothing, just wont go and is now trying to spit back through the carb. Checked timing had side case off and cam cover everything lines up. took plug out and compression feels good. even fitted another CDi unit from another 300 still no start. It's behaving like the timing has slipped but how? Any ideas?

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  • Trevor Lewis Jul 26, 2009

    Thanks heeman done all that already. Have found that the plastic mount between carb rubber and head has shattered the piece that has 2 O rings one has burst out so it must have done a big backfire though the inlet to do this damage. I'm now thinking bent inlet valve gonna borrow a compression tester tomorrow before pulling the head

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  • Posted on Jul 26, 2009
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Joined: Jun 12, 2009
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Check spark,timing from side case side,then swap spark plug,try to bypass spark cap,then check flow of petrol to carb,clean carb and allow to cool if needed.Sometimes a coil just dies for no apparent reason..The last resort is to swap the coil inside the side case...

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