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holley carb question

1K views 4 replies 5 participants last post by  WB54 
#1 ·
should all 4 butterflyies open when i rev the car,at the moment only 2 open,its running a bit rough when i stick my foot down,tick over is fine any advise please thanks its on a rv8
 
#4 ·
You need load on the engine in order to pull the vacuum required to open the secondarys.

If you want to know whether the secondarys are the fault then jam them shut on the linkage.
 
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