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How to diagnose a Quadrajet part 3

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How to diagnose a Quadrajet part 1
I get lots of questions about poor running issues. Here's how to check them out.





Quadrajet HP for $40.
A GEARHEAD PRODUCTION. Throw away the Edelbrock and the Holley and save your money. You can build a hp QJ for less, and get better performance and mpg too.





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. http://www.youtube.com/watch?v=l_SgQiVf3_0&feature=youtu.be here is a technique for re-bushing the throttle shaft without drilling. http://rmcavoy.freeshell.org/Q_Jet_bushings.html





Quadrajet Moan
Quadrajet opening its secondaries. Edelbrock RPM 1910





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. Enjoy!





re-jet your Quadrajet (part 1)
rejetting a quadrajet





quadrajet-cam
See 1976 Chevrolet pickup with Rochester quadrajet upgrade on SBC 350 V8. We removed the hood, mounted a camera looking down on the air horn, and took it for a spin, running wide open on an uphill grade. See how the secondary air valve responds to rpm drop at each upshift of the THM. Also included is a smoking burnout.





Why Quadrajet's are awesome part 1





How to rebuild a Rochester Quadrajet part 7





Decoding a Rochester Quadrajet part 3: more practice with the numbers.
Here's one more video that will help you learn to decode the ID numbers found on the Rochester Quadrajet.





Quadrajet sound
Q jet secondary operation





How to rebuild a Rochester Quadrajet part 3
Finishing up the disassembly.





How to diagnose a Quadrajet part 2





New quadrajet set up
New air-gap manifold and custom/rebuilt q-jet. Sounds good but I still need to set the timing on the distributor and the carb is tuned already. Hope you like, nothing to fancy just a few revs and walk around...the Exhaust is true dual no x/h pipe and it has cherry bomb glasspacks(3 inch)





SPARK PLUGS How to Read them (Part 3)
Some Spark Plug Samples (Used) and how to tell just how well your Car or Trucks Engine is Performing





Which car is faster? Which Car is Faster?




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