2007 honda trx450er

it has NO spark when cranking it over with electric start.. you take it out and push it by hand really fast (as fast as you can run)and pop clutch out it will fire right up... or hook up behind a different four wheeler and pull start it HAS spark and it runs fine when runs buy if you kill it while riding it you have to pull start it or push again....

heres something i did in shop to test a little bit ago me n my brother push it by hand and have spark plug grounded to frame........ and push by hand IT HAS PERFECT SPARK WHEN IT HITS A CERTAIN speed...THEN WHEN IT SLOWS DOWN BEFORE CERTAIN spot then HAS NO SPARK AGIAN...
And also it sounds like more compression when pushing it by hand...

and when you use the electric starter sounds like it turn over slower and less compression but starter sounds fine.
i also hooked up battery charger and it cranks over little fast and starter cranks over really fast...


WHAT CAN BE WRONG

 

Does the starter/battery sound good when turning over ..?.. Could be a weak battery

 

i aint pushing the throttle....
or are you saying it could be the throttle position sensor thing?????

do you think the starter one way clutch could be slippin not turning engine over fast enough or something