Hook up vacuum advance quadrajet
Thread Tools Show Printable Version. This can cause "nozzle drip", a harsh odor of exhaust, and a poor idle quality. Sorry for no pictures and a bad description. Yes, definitely pull and reset the distributor. If the two positions are the same distance away from the factory mark on the balancer then it hasn't moved slipped.
Where Does The Vacuum Advance Hookup On A Quadrajet Carb
Please enter a valid email address. I don't want to hook up the vacuum advance to a manifold source.
Retrieved from " http: The primary side is used instead off the secondary because the primary side is almost always flowing a good quantity of air so the vapors will be well mixed before entering the hook chambers to be burned. You are using an out of date browser. Also When I disconnect the vacuum advance is there supposed to be vacuum coming from the line that goes to the distributor, or does the vacuum come from the carb and go to the advance that way?
If a vehicle had a manual transmission, it was connected to a ported vacuum source. When checking you mechanical centrifugal advance, the vacuum advance line must be plugged as well.
I have only 3 vacuum lines to go on.
Highway Star is offline. Then use the vac gauge to adjust the carbs idle mixture screws. The point is, even though they aren't opening in neutral, the airflaps should be opening when in normal use.
Vacuum advance line comes from the factory hooked up to a manifold port on the Q-jet but there are many different views on that. The one with the white ziptie is the trans modulator or whatever you call it. The port is above the throttle blades. Once you have finished adjusting the carb and timing you can then re-connect each line things to remember when dating someone with adhd one at a time, which will allow you to note any decrease in the vacume reading.
How to rebuild a Rochester Quadrajet 4MV carbureto I know one goes to the booster, this one is on the back, one goes to the PCV this on is on the front. Views Read Edit View history. I do have a question on timing but I'll make another post. Plug gaps too close or points not adjusted correctly. You want to plug the line to the vacuum advance when setting the timing.
I suspect the fluctuating timing - which may be causing your idle speed to fluctuate, is what is causing the vacuum reading to change because, and as you noticed, when the idle speed goes up so too does the vacuum. Lastly I have one that is hooked up to my th trans that I put somewhere, can't remember off the top of my head. While ported vacuum for the vacuum advance is often thought to be for "emissions" applications, in certain cases there are sound reasons for a performance engine to use ported vacuum.
In I preferred ported but now 7 years later I found manifold works best for my setup. I should be good to go.
This page was last modified on 8 Januaryat