http://www.carburetor-parts.com is happy to provide this video about the Holley 4000 electric choke. Buy this electric choke here: https://www.carburetor-parts.com/Carter-AFB-WCFB-Carburetor-Electric-Choke-Thermostat_p_64.html
Edelbrock Foundries and Manufacturing
Edelbrock produces all of our cast items right here in the USA at our two
state of the art foundries. You can be assured that when you are purchasing
an edelbrock casting it is the best quality available. Check it out from
start to finish.
Holley 4000 Carburetor Assembly - Part 1
http://www.carburetor-parts.com is happy to provide this information video
about the Holley 4000 teapot carburetor. The full rebuild DVD is available
on our web site.You can find parts for this carburetor at
Electric Choke function
The remote mic failed, and so the soundtrack is missing.
This is a demo of how an electric choke works. Some of the hand gestures
illustrate what the air load would do, so it's simulated by me nudging the
blade. Still a good video of function even without the sound though.
How an Aisan Carburetor Works
For those of you who want the copy of the carb cutaway I use in the video.
Here is the scan of it.
I said last year I had a carb issue. Well after some investigating it has
been determined time is the reason and not my modding. Since this carb
looks more complicated then a typical American carb. I go over it then
explain what caused the failure.
Holley Carb Troubleshooting and Rebuild - Things to Check!
Did some more troubleshooting on the carb. Found a few major issues.
1. The primary float bowl float was not adjusted correctly and was not
shutting off the fuel. The tab on the float was bent down allowing the
float to travel all the way to the top of the bowl without seating the
needle. This allowed fuel to continually flow into the carb and richen it!
2. The power valve was the wrong size. According to Holley, the valve
should be 1/2 the measurement of vacuum at idle in drive. According to my
vacuum measurements, the power valve installed was opening too soon and
dumping raw fuel in the engine when it was not ready for it, again
richening the mixture!
3. The idle mixture screws were not set correctly. They were at 2-1/4 turns
out. That is too rich for this particular engine setup. Using a vacuum
gauge, I adjusted the idle mixture for maximum vacuum at idle. In my case,
that was 1-1/2 turns out which is also the recommended Holley starting
4. My vacuum advance was not connected to the right port. It was connected
to manifold vacuum instead of ported vacuum off the carb. This caused the
timing to always be advanced at idle and then retarded under load as
manifold vacuum drops under load! Totally backwards! Ported vacuum on a
Holley can be found above the idle mixture screw on the passenger side of
the carb at the metering block.
I bought this carb about 10 years ago as a "store return". I didn't do much
to it then, assuming it was fine . I just bolted it on and drove the car,
seemed fine then. I realize now that the temporary owner messed with the
float and bent the tab too far and he also changed the power valve. I am
checking online to see what the stock main jets should be as he might have
changed those too! Word to the wise, never take anyone's word for it that a
carb is "all set to go!" Each application is different depending on the
vehicle and the amount that the engine is built. Use the proper tools like
vacuum gauges and look up tables to adjust for the proper values for your
application. There is no one size fits all!
Final word about power valves. Holley has built in an anti-backfire check
valve circuit in all Holley carbs since 93. Blowing out a power valve by
backfire is nearly impossible. However, the diaphragm can get old, cracked,
and brittle so it is best to pull it and examine it if you suspect it to be
a problem. To test it, turn all idle screws in all the way while the engine
running at idle. If the engine stalls, the power valve is working properly.
(keep track of the number of turns so you can put them back where they
I did complete rebuilding the carb and reinstalled it. I will have more
video of making adjustments and test drives soon...Thanks!!
Holley 4150 Street HP carb rebuild- Tear- Down-Part 1/3
here is a video i made when I rebuilt my Holley 4150 Street HP carburetor
that I purchased at a swap meet. It turns out it was in very clean
condition and would not have needed rebuilding but I wanted to make sure it
was clean inside. It was a good experience doing the rebuild. It's always
good to learn something new. I am not a pro and this is my first Carb
teardown so those folks that feel compelled to say what is wrong with what
they see, please don't bother. Remember what your Mom said, "if you can't
say something nice..."
Autolite 4100 4 Barrel Electric Choke Coversion
http://www.carburetor-parts.com is providing this demonstration video about
the Autolite 4100, 4 barrel choke and how to convert it from the hot air
type of thermostat to an electric choke.