HOLLEY STREET AVENGER RUNNING HIGH

[dickeymoore]

I have a Holley 670 street avenger carb on my SBC 406 that was running perfectly in the hotter weather but not it seems to be running a little high when I come to a stop so I have to snort the gas pedal for it to idle down correctly, I have good return springs on it and when I park and shut engine off it kinds of detonate and I don't run nothing but 93 octane fuel,ANY HELP?THANKS

 

[scoti]

Have you checked timing? You might need to back off the timing a bit.

 

[dickeymoore]

Ok Thanks