Let us know if you find the problem?
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On May 14, 2022, at 10:48 PM, Gary Wittman via groups.io <gary.wittman@...> wrote:
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Thanks Linc and Steve for your suggestions.? I already checked the fuel level in the bowl.? Replacing the power valve was the first thing I did after checking the fuel level.
My problem is not excessive fuel, it is too lean at idle.? I can get it to near idle if I hold the choke partially closed..
I think it has something to do with the idle circuit.? Possibly, partially clogged, but I don't know how that would cause the fog coming out of the vent.?
I think I will go ahead a take the carb off and try to figure out what would cause the fog in the vent.? Then blow out all the passages.? I will also make sure the idle slots are exposed properly.
Gary in SoCal?
On Saturday, May 14, 2022, 06:50:00 PM PDT, Steve W <fords65273@...> wrote:
When I have signs of excessive fuel in a Holley carb, I always check two things. First is the float level. If the needle and seat are stuck open, or the float is sunken, fuel will flow out the sight plug (with the engine running). The second thing I do is replace
the power valve.?
Steve
I am dealing with a Holley carburetor that won't idle after more than 15 years of working very well.? When I start it cold, it fires up fine.? When the choke starts to open up the engine begins to run poorly.? It has an electric choke and I can turn off
power to it.? This keeps the choke partially closed and the engine keeps running.? This tells me it is running lean.? I have checked for vacuum leaks and have found none.? I have some ideas of what it could be but before I take the carburetor off and take
it apart, I wanted to see if any of you have an idea of what it can be.?
Once it is warned up, I can de-choke it and it will run well if I keep the rpm at 1300 or higher.? It sounds healthy when I do that.? If I try to lower the rpm, the rpm begins to drop and engine slowly dies.? There are two vent tubes that stick straight up
on top of the carb. One is in front of the primary horn and other is behind the the secondary horn.? They are both angled at the top.? ?I don't know their function but the front one is doing something I have never seen before.? There is kind of a fog/mist
coming out of it.? I can even feel some small droplets coming out.? I am pretty sure that has something to do with the problem, but I don't know what would cause it to do that.
I plan to take the carb apart and try to trace the galley to see if I can figure out what is casing the fog.? I am hoping somebody already knows what it is.
Gary in SoCal
