In my last posts i was saying that my MB5 sputters sumtimes, and i think its due to the compression or the plugs. Well, i put a new NGK plug in it, and last night, when i first started it, it sputtered really bad whe i revved it. I let it sit and idle for about 5 minutes, and it stil did it, but after reving it, and finally putting it into gear and hitting the gas, it stopped. I dont know if its cuz it wasnt warm ed up or what, but it only does this every so often when you first start it, and sometimes it will go away. I dunno why Ms. Mary..... I dropped the baby. murp.