650 Holley Spreadbore Question
Discussion
Have a 650 Holley Spreadbore manual secondary double pumper
List 6210-3,with the devorced choke removed completely,30cc front and 50cc rear acc pumps.
This carb was used but in good condition when I rebuilt it,but seems to have been tinkered with by the previous owner.
It idles very rich,and adjusting the mixture screws make no difference in vacuum readings.I can screw them in to the point of killing the engine,so I don't think the new power valve I put in is bad.
I've also noticed that the secondaries are closed completely,so it's only idleing off the primaries.Sometimes the secondaries hang up just a little bit and the engine idles up and seems to lean out.
It's not a 4 corner system, but I think I read somewhere that the throttle plate position of the secondaries are still part of the idle system.
If so I could use a step by step "block of instruction" on how to get this thing back to how it should be.
Also,could the jet sizing have any affect on the idle quality?
List 6210-3,with the devorced choke removed completely,30cc front and 50cc rear acc pumps.
This carb was used but in good condition when I rebuilt it,but seems to have been tinkered with by the previous owner.
It idles very rich,and adjusting the mixture screws make no difference in vacuum readings.I can screw them in to the point of killing the engine,so I don't think the new power valve I put in is bad.
I've also noticed that the secondaries are closed completely,so it's only idleing off the primaries.Sometimes the secondaries hang up just a little bit and the engine idles up and seems to lean out.
It's not a 4 corner system, but I think I read somewhere that the throttle plate position of the secondaries are still part of the idle system.
If so I could use a step by step "block of instruction" on how to get this thing back to how it should be.
Also,could the jet sizing have any affect on the idle quality?
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