1969 corvette rochester carburetor Videos

i have watched all of your videos on how to rebuild a carb and thank you for you " step by step " rebuild videos.. now i dont know how to set the fuel mixture screws so that it doesnt run rich or to lean ? how do i set them 

Where can I find a new electronic choke for my carb, my local shop keeps trying to just jerry rig the choke to work and I'm ready to just replace it and move on 

+LONIE DAVIS Thanks!

+Jose Posada not externally

+Bohappenstance Click Awesome man, thank you!

+David Crichton-Gill You are welcome.

+r3dnkn I PM'ed you my email.

+WhoSaidTyler Thanks a lot!  I'm starting to DIAGNOSE it now.  I will get a spark tester and eliminate that as a possible problem, and move on from there.

Try never to make guesses. Problems like these can be diagnosed by simply thinking of the 3 things an engine needs to run, at the right time and in the right amount:1. Fuel 2. Air 3. Spark.What is happening in the space of 10 minutes to cause a no-start? The first thing I consider is heat soak. When you turn the engine off, the temp goes up 30 degrees or so for a little while, then cools down. So, likely that either the fuel is boiling(vapor lock) or the ignition system is conking out.My instinct tells me vapor lock since there don't seem to be other running issues mentioned. I suggest buying a spark tester, and then try to create the situation where the engine will not start. When that happens, pull a plug wire, pop the spark tester in place and spin the engine. If you see results in the spark tester then you know your issue is fuel related, and not ignition.After that you can evaluate the carb to determine whether the problem is flooding, or vapor lock as I said. Now you can DIAGNOSE and not guess :-)

oye buen video...yo tengo un carburador igual y me gustaria limpiarlo y restaurarlo....donde puedo conseguir el kit de reparacion de un caburador como este en mexico?????donde es mas comun encontrar empaques para este carburador???

uuuf! yo compre las juntas para cambiarlas pero así como veo , mejor lo llevo con alguien que sii sepa jajajajaja 

Que spacer necesito para instalar un 4B roschester quadrajet en un motor Ford 400M 6.6L V8? 

Excelente video. Ojalá que pudieras hacer uno de un carburador de bocho 1600. Felicidades!!!!

buen video,y para cuando el video del carburador limpio y listo para armarlo?¿,un saludo.

buen video. gracias por subirlo. un saludo.

GRACIAS POR ESTE VIDEO ILUSTRATIVO

@RhondainIndiana Hi,there.You are right the secondaries are way to loose! see people think they should open up just buy hitting the throttle in park which it does not work that way.When you have it in gear and hit the throttle they should open not to fast or to slow a happy medium.the way this guy has it setup i guaranteed when he takes it out and smashes the gas pedal it will bog and fall on it's face that's just my opinion.(*?*)

The 'moan' of a q-jet is caused by those massive secondaries opening up. When just tooling along you are basically running on a very small and efficient 2bbl carb (the smaller primaries in the front of the airhorn. When you get down on it ... the vacuum and linkages open up the massive secondaries - the added volume for gas and air creates that beautiful growl or moan you are talking about.

-You probably have the needles in the secondary stuck or a vacuum loss somewhere screwing the secondaries,maybe power valve stuck(very common),you'll have to open the carb and reassemble,once it's clean and neat you'll have a carb that's gonna work fine for a long,long time.

In neutral the air valves won't open on smaller engines - like most small blocks. Even with a big block, they are hard to get open. It depends on the bleed rate in the choke pull off and the tension in the air valve spring.

That's the point... if the air valve opens too fast, the mixture goes too lean for a moment and you get a bog. If you want your air valves to open faster and not have a bog, you have to use richer secondary metering rods.

Motors, like the 350 stock barely needs 550 cfm. Quads are 750 cfm. And they operate on what the engine needs. so on small blocks the secondarys will open half way. If you force secondaries to open sooner it will bog.

i wondered too,i have an 86 cutlass with a 307 and a quadrajet and when i mash down on the throtlle it creates that very beautiful sound,i love it! i'll always have a rochester on my cutlass,no holleys or carters!

not to bag the carter product, they were a sweet carb, shat on holleys and i rate them highly, i only wished they hade a metal main, as engine temps tahe their toll on bakelite

hey sweet vid i bet that sucks the gass hard core with the seconds opening fast lol thats why i set my to open later lol check out my vid and tell me what you think.

Taking a chevy g-van for a ride with the engine cover and air cleaner off. Ahh between the sound and the show of those secondary butterflies opening is pure bliss!

What is it that creates that deep sounding noise on these quadrajets? I always thought since I was a kid that was the coolest sound in the whole world, even today!

drop the vacuum link to the secondary airvalve lockout, raised the metering rod hangers 2mm and adjusted airvalve spring tension to be firm - tweaked on the dyno

I loved the roar of my 1983 G20s 305 Q-Jet. Even breathing through an open element air cleaner with the doghouse in place it sounded impressive.

I have a 75 chevy stepside with a 350/th350 and the secondaries on my q jet aren't opening up right. Can anyone give me some help

PEASE put a video up - i would LOVE to see it - if only i could - maybe one day ill drop the bonner to see it in flight

Love the sound of a Q-JET. I am about to put one on my pontiac 350 c.i. engine in my 81 trans am. Can't wait!!!

@RichardTaylor1800 that would cause any more fuel usage than normal until the 4barrel is open right?

i do not understand these carbs at all..cant seem to get the secondary's to open...whats going on?