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Cleanliness is paramount in a carb rebuild. Did you ensure the idle air bleed holes are not clogged or blocked ?
Not entirely certain the problem is only with the idle circuit per se. The main issue is the bluish exhaust and the fouling of the plugs - conditions I am attributing to a rich fuel condition.Like stated previously, the power valve has absolutely nothing to do with the idle circuit. And that seems to be where the problem is, correct?
No, I did not specifically ensure that the idle air bleed holes were not clogged or blocked. I will try to do that. What is the best way to do so? Spray carb cleaner through them, or run a thin wire through the channel. Holley does not recommend the wire route, as they say it could damage the interior of the passageCleanliness is paramount in a carb rebuild. Did you ensure the idle air bleed holes are not clogged or blocked ?
Spray, don't wire it.No, I did not specifically ensure that the idle air bleed holes were not clogged or blocked. I will try to do that. What is the best way to do so? Spray carb cleaner through them, or run a thin wire through the channel. Holley does not recommend the wire route, as they say it could damage the interior of the passage
OK, will do.Spray, don't wire it.
You're CLUELESS as to how a Holley functions if you think a blown/leaky PV won't affect idle....A leaking PV has no effect on idle. The idle screw test in post #31 does not prove anything related to the PV.
The PV is part of the main cct. Enough air speed [ increase in engine rpm ] has to pass through the throttle bores to activate the main system [ main jets ]. If the PV was blown, then the carb would be very rich at this higher rpm, but not at idle.
Do you have to remove the small set screws in the air bleed holes? There are 4 on either side of the carb, and the outside ones appear to have set screws with larger internal passages, whereas the inner ones have set screws with very small passages. Carb cleaner goes freely through the air bleed holes with the bigger passages.Spray, don't wire it.
Yes, if you're spraying cleaner through the passages, remove the bleeds. Those you can put a wire through to make sure they're clear.Do you have to remove the small set screws in the air bleed holes? There are 4 on either side of the carb, and the outside ones appear to have set screws with larger internal passages, whereas the inner ones have set screws with very small passages. Carb cleaner goes freely through the air bleed holes with the bigger passages.
Should I remove those set screws, and how are they removed? Greatly appreciated.
what do you use to remove the bleeds?Yes, if you're spraying cleaner through the passages, remove the bleeds. Those you can put a wire through to make sure they're clear.
Wear your eye protection!
An allen wrench...what do you use to remove the bleeds?
Wear your eye protection!
No. If that's yours in the picture, it's a vacuum secondary.For a little background, the carb is a Holley 750 cfm with mechanical secondary
3) Fuel bowl levels have been adjusted so that the fuel level is just below the opening of the sight screw on the side of the bowl
Yes to do it properly it should be running.. I have adjusted the needle seats to the point where the fuel level is just below the opening in the fuel bowl when I remove the sight plugs. I check this after shutting the vehicle off. Should I do it while it is running?
I wonder if you had the correct stack of gaskets for the secondary metering plate. For a vacuum secondary 3310 by the looks of itAs for the gaskets, they came from a kit provided by Holley, not an aftermarket no-name set of gaskets. However, how would incorrect gaskets create this situation?
Yes, you are correct. It is a vacuum secondary. I am somewhat of a novice, and used the wrong terminology. Which gasket exactly are you describing? The one between the metering block and the main body of the carb?No. If that's yours in the picture, it's a vacuum secondary.
Yes to do it properly it should be running.
You should be quick while doing it, and a bit may dribble out while doing it.
I wonder if you had the correct stack of gaskets for the secondary metering plate. For a vacuum secondary 3310 by the looks of it