hi to all
i have a 2000 honda 350 fourtrax and rebuild the piston ,rings and cylinder bore
now i cant start the engine (it was running but with lots of smoke before we got it rebuild it) all it does now is backfire
i cant figure this out ' i may need help on timing were,how do i do timing

thanks to all waterboyken[img]i/expressions/face-icon-small-frown.gif[/img]
email :kbearbear@yahooo.com

 

The ignition timing is not adjustable .. And unless the bottom end was disassembled the cam should still be in time .. Were the valves adjusted when the head was installed .. ?

 

thanks for your respone
ok my son turned over the engine not knowing anything
without the piston and cylinder on
and there is no compression and seems it sucks in more than out pressure from spark plug
thats why i asked for timing
can you please tell me were the piston should be and valves should be
RE: piston is up and valves closed or open
`` thanks waterboyken

 

With the spark plug out and the top cover removed turn the engine over slowly with the pull starter ... Watching the valves when the intake opens and closes check the piston location with a light thru the spark plug hole .. turn thr engine slowly until it is as close to TDC as possible .. Then check the valve clearance for intake & exhaust ..

 

thanks for your help!!
it worked just fine,engine is now running
i can still hear the valves(noising)
so i'll have ajust them after its hot

again thanks for your help waterboyken[img]i/expressions/face-icon-small-smile.gif[/img]

 

They should be adjusted when the engine is cold to ....... VALVE CLEARANCE: IN/EX: 0.15 mm plus/minus 0.02 mm (0.006 in plus/minus 0.001 in)