help my jimmy doesn't run. it runs but when you step on the gas it doen't excelrate,boggs down can't go over 35-40 mph. replaced the oxygen censor and the injectors in the carborrator,its not the fule filter and the convertor's not clogged. the spark plugs are good and the wires are goodwe replaced two other parts and thats not the problem either.we did notice that the enjectors drip and i was told they are suppose to spare. is there anything we can check before we go and get a new motor thank you tenderfeet