hi i have a 1600 comp,when i load it up it sometimes goes and sometims not,its like the engine isnt picking up the rpms,it will idle at 1300rps sometimes but it seems to just want to kill the engine.it has a cat engine,i even hot wired the fuel shut off just incase that was the problem,i know it is something simple but it has me beat,can you give me a few tips on a possible problem..Joe