Quadrajet Electronic Carburetor Rebuild - Teardown Part 2
http://www.carburetor-parts.com. Mike's Carburetor Parts has provided this
video about rebuilding the Rochester Quadrajet E4MC, E4ME, electronic
version. This video is part 2 of 2, tear down. A later video will feature
the assembly of this carburetor. (c) www.carburetor-parts.com
How to de-bog your Quadrajet part 1
Sorry guys, I got the videos a bit out of order.
The Rochester Quadrajet has gotten a bad rap over the years, often called a
Quadrabog or Quadrajunk.
In fact, this is a great multipurpose carbureter once you understand how
they work and what not to do to them.
In this clip I introduce you to the Quadrajet and begin explaining the
theory of operation of these units.
Quadrajet air leak fix and warped air horn repair tutorial.
How to identify a Quadrajet with a warped air horn without diss assembly or
running it on a car. These tips would have saved me time and money which is
why I made this video. I also discus how to repair a warped air horn and
prevent your air horn from warping in the first place. If you have a
whistling noise just off idle then you got some work to do. You will never
get your engine tuned right, your cold start performing or decent fuel
economy unless your four barrel carburetor is just right. Special thanks to
Cliff Ruggles for his book Rochester Quadrajet carburetors and to my
brother Adrian who spent hours on tuning and fitting.
See this video for description of the technique I used to straighten a
warped air horn.
here is a technique for re-bushing the throttle shaft without drilling.
Carter AFB 9000 Carburetor Teardown Part 1 of 6
http://www.carburetor-parts.com is happy to provide this informational
video about the Carter 9000 AFB carburetor. This is the 1st part of several
videos demonstrating the rebuilding of the AFB carburetor. For the full
rebuild video DVD please visit our web store, Mike's Carburetor Parts.
Rochester Quadrajet, the results!
Two mishaps, the first shown here, the choke coil I got was wound
backwards, it made the choke butterfly wind up TIGHTER as the engine warmed
up. I swapped on the one from the old carburetor fast enough, the second
mishap made me feel like a crud and what did I mess up later that evening.
The car would not start leaving the Etobicoke -Queensway show. It was not
getting gas. We got it running by priming the carburetor, and boy, was I
ticked at myself. In the end it was not my fault it looks like. The new
accelerator pump umbrella and rod was a very poor and frail design, the
umbrella came detached and stayed at the bottom of the of the pump well,
and was a distressed mess. The maker will get a note from me. The upshot?
The old assembly went in, all is perfectly fine, the slight tip-in
hesitation is gone now too. Stupid lack of pride it seems these days
making parts for even simple things like an old carburetor.
Rochester 4GC Carburetor Rebuild Part 1 of 4
http://www.carburetor-parts.com is happy to provide this information video
about rebuilding the Rochester 4 jet carburetor. This video is about
rebuilding the 4 barrel throttle body.
The last thing to be looked at on the wagon, but really, no old car project
is ever done, things keep being played with and adjusted. This is a
correct Rochester Quadrajet 4-barrel carburetor I got some time ago, and
has been renewed with new seals. The bushings and other hard parts were in
good repair, so with the new seals. T o note, I called out the first three
serial numbers as being "701" when in fact it starts with "704" . When
building up a Rochester, one has to understand they can't just throw parts
into it, they may be unhappy with the results. They should also be ready
to have to change a jet here, a metering rod there, a spring or two after
the unit is on to get the car running perfectly. The Quadrajet is a sweet
carburetor, once you understand it a bit. As I am doing. It is running
well, but will need a bit more tuning in the way of a stiffer primary
metering rod return spring. Other then that, the car has more bottom and
top end power, mid range is the same, but the bonus is, fuel mileage has
picked up, the leaky bowl of the old unit is gone!
More Quadrajet tuning, some things! Part two in this Saga Sept 13, 2010
With the camera sitting on the oil filler cap a few more things to show how
a metering rod system works on a carburetor. The car has a slight stumble
and surge at a light throttle cruise at about 55 to 60 MPH. By swapping
out the .050 metering rods to .048 units, the stumble and driveability
concerns are now gone. Going richer would mean worse fuel mileage one may
think? No! Now that the mixture is right, LESS throttle opening is needed
now, which means higher vacuum, and this way the metering rods will block
off the correct amount of fuel, and in the proper timing and percentages,
so the car runs much smoother. As stated many times, patience and reading
up on, and understanding how these intricate carburetors work will help out
very much! Enjoy!