I have a '92 Cavalier 2.2l that is sucking the bank account dry! It used to not start after it got warmed up but we replaced the fuel filter, fuel pump, fuel regulator and the fuel injector. The plugs and wires have been checked and they look good - The problem is that now when the car gets warmed up it runs rough and sounds like heck - I don't know what else to check - definitly no car gurus over here - any help would be greatly appreciated!