hey i was wondering if anyone knew anything about the quad 4 and maybe some of the problems it has. well my car when i start it and let it sit for a while before i leave my driveway it wont stall out but when i rev it up when it is just sitting there it will stall out and sometimes not re-start so if anyone knows whats wrong please fill me in

Sounds like a timing problem , Perhaps the tensioner for the chain is no longer functioning properly and allowing the chain the drive the cams too losely. Just a though =)