Can someone help me my engine will not idle it will only run if I hit the throttle (it stalls in idle), but it does not have any top end or low end power either.

Tune the thing up start with the top end try to lean it out bit by bit and if that di=ont work try to richen it in small increments. Then do the low end doing the same and when you are finished adjust the idle screw. You need to tell people what type of motor you have and then look up the specs for it. Is the motor broken in yet? That makes a huge difference . My engine in my cen matrix was tough.

dude that message is like 3 yrs old! lol