help with ops.21 se

[taber]

cant seem to get this engine to run right.i'm using a remote needle.carb always came loose so i sealed it to the crank case cut needle back and sealed it to carb.engine will start fine,then run~35 seconds then quit.no matter were needle is set.i also checked for air leaks,dosn't seem to be any.trying to break in a new piston and cylider.any ideas?

 

[racerred]

How old are your bearings?

 

[taber]

How old are your bearings?

they are brand new

 

[Tim_Duggan]

Blocked pressure line maybe?

 

[ww29]

i had the same problem with mac 67.found out the fuel tank was no good.wouldnt pick up fuel after engine was started

 

[racerred]

Yes if the bearings are good then go through the whole fuel system.