Hi, all,

I've only had my '02 Blazer 2wd for about three weeks. I've noticed that sometimes when it starts, the engine will jump. It's not like it's trying to lunge forward or anything, it just starts really rough. I changed the spark plugs and oil and I ran fuel system cleaner through it too the day after I got it. Does anyone have any thoughts about it? I've never experienced this with any of my other vehicles so I'm clueless. Thanks for the help.