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Mike8623

96 kingQuad 300 wouldnt start

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Questions for you guys, I have a 1996 king quad 300 with less than 2000 miles on it. I started having problems with it starting. had the valves adjusted and it worked for awhile and then started having probllems starting again, had valves adjusted and again it worked for awhile and then it wouldnt start and it seemed each time I had the valves adjusted it was taking less time for it to quit running. I took it in last time for repair and they replaced the whole top end, piston etc. and now it runs pretty well, but I have noticed if I run it 40-50 miles it is hard to start.

Any ideas

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Forgot to tell you folks that everytime the valves were adjusted they were tight. Once they were re-adjusted it would run fine for awhile and then it wouldnt start again. Adjust the valves and it would run again. The last time I run it I put about 50 miles on it and had a hard time getting it started once I turned it off (and that is after it was repaired with a new piston, rebore on the cylinder and rings and gasket at $854.00.

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Im having the exact same problem with a quadrunner 250. The vavles keep tightening them selves out of adjustment..Best I can figure is its a cam or chain problem but not sure which one..If you do figure this out please let me know what your cause was maybe itll be the same for me..Mine started out the same way but now itll only drive for 10 minutes until the vavles get too tight and it wont run any more, it really sucks..Hope u get ur answer.

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I`m with Ox. Check that your timing chain hasnt jumped. Put the piston at TDC. Pull the head cover and check the cams are neutral, and the alignment mark on the cam shaft is right. Check the valve push pads and adjusters are not damaged.

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