250 shineray , stumped?

[markgb98]

I just bought a used 250 shineray atv, Has spark getting feul but will not start, turns over and tries real hard but no go. I cleaned the carbs and changed the plugs but nothing. The guy I bought it from had it running and he said it just backfired and stalled one day and wouldn't start. Any ideas would be apreciated thanks

[eddie]

I just bought a used 250 shineray atv, Has spark getting feul but will not start, turns over and tries real hard but no go. I cleaned the carbs and changed the plugs but nothing. The guy I bought it from had it running and he said it just backfired and stalled one day and wouldn't start. Any ideas would be apreciated thanks

Remove the plug, spray a shot or two of WD40 in to the cylinder. Replace plug and try starting.

[ChinaV]

Fuel and spark are good, how about compression?

If it backfired and stalled, could have damaged a valve.



Cheers!
ChinaV

[markgb98]

I tried the wd-40, havn't checked the compression yet. I was told to check the timong anyone know how to go about this?

[CrazyCarl]

Checking timing depends on the type of timing system you have on your bike.

If it's overhead cam, then there will be marks on the cam that should be parallel with the edge of the head when the engine is at TDC (Top dead center) usually marked on your flywheel down by the alternator.

It would be helpful to snap some pics if you've already got the engine apart.

CC

[markgb98]

checked the compression all is good, had another guy I know say he had timing issues with his, I'll snap som pics today thanx