Diagnosing a misfire

[lyrikz]

Originally Posted by Mrturner1

Ya I think you're right. I had the 650 dp on the sales counter too and intended to buy it, but the sales guys were pushin for me to buy a 750, and when I made a desicion the two must have gotten mixed up. The speed shop where I got it won't take stuff back unless it's broken or will benefit them somehow. The good news is I am learning a lot about these Holleys and I'm pretty confident I can tune it down to work well with my combo.

Change the carb, or lean it out. Put new plugs in it. Those plugs are bad.