Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem
Heavier throttle (mostly) issues
Cliff Ruggles:
Those are actually excellent units, and after that many years for sure it needs a good cleaning and some modern components for this new fuel......Cliff
MP81:
Good deal! I just placed the order for the rebuild kit.
I also have the book (my buddy had a copy he let me borrow), but haven't had a chance to dive into it too much (we're on vacation this week) - but it looks like it's a pretty good breakdown on how to rebuild the whole carb. Does it mention any "performance tweaks" that are worth doing while I'm in there?
Cliff Ruggles:
Thanks for the order.
The CCC carburetors respond to all secondary performance mods same as any non-CCC unit.
The ECM only controls part throttle A/F, so heavy and full throttle is same as any other unit.
Always do the "basics", all throttle plates adjusted to 90 degrees, index the throttle plates if/as needed.
A quick release choke pull-off helps, and some will need a little material ground off the stop on the secondary air door to get a little more CFM to them........Cliff
MP81:
I assume all that is detailed in the book?
Do I need any fancy tools? I've seen that I need certain Thexton tool kits, but I've heard from others I don't? I totally forgot to order any, so "not" would be the preferable answer, haha.
Cliff Ruggles:
No special tools required. I like to slot the M/C solenoid adjustment screw with a fine hacksaw blade so I can turn it with a tiny flat tip screwdriver. Pretty easy to make a special tool for it was well from an old screwdriver. Cut a "slot" in the screwdriver shank pretty much like a tire valve core tool.
The upper metering rod limit screw can be done in similar fashion. I'd tap and install set screws instead of driving in the tamper proof plugs so any adjustments needed can be done with the carb on the engine......Cliff
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