900 king cat motor pronlems

[ditch banger]

Well i will start this out like this. last season my sled burned up do to lack of oil and over heating. So I tore the motor apart and had the cylinders shipped off to starting line performance and they ported and refinished the cylinders. New pistons bearings and all new top end. after this it has ran rich one time and lean the next. replaced the ignition sensor and the staytor checked out fine. smart valves where plugged and i fixed that.then the motor wont even start. has spark and fuel. i need help

thanks in advance

 

[diggerdown]

Spark, fuel. air...only thing missing may be compression. Hope not but if was lean it can happen really quick. You didn't say if it was carb or efi, I assume carbed since you know it has fuel.

 

[ditch banger]

efi and it has tons of comps

 

[snailbait]

Check your TPS and make sure your ground cable is connected at the base of the motor, behind the exhaust can.

 

[Rixster]

What does it do if you use a little ether or pure some fuel in the plug holes then start it ?

 

[1Mike900]

Use 2 stroke fuel if you do, much better than dry Ether. Is your engine timing wigging out or moving back and forth? Fuel, Spark and compression are the basics and timing is what ties it all together!

Good luck Mike

 

[ditch banger]

did not get to try putting gas in the cylinders. the timing had been going wack not letting it run right so I had the ignition sensor replaced. now it is at my mechanic. so we will see.