Quadrajet Idle Mixing Screws
- Thread starter custodian
- Start date
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Ricko1966
Full Access Member
- Joined
- Apr 11, 2017
- Posts
- 10,038
- Reaction score
- 19,312
- Location
- kansas
- First Name
- Rick
- Truck Year
- 1975
- Truck Model
- c20
- Engine Size
- 350
Is the carbureator on or off the car? Off the car, clean and dry I'd try hitting it with propane. On the car I'd use a soldering iron to apply heat use patience and more heat you know mixture screws only effect idle mixture. So push comes to shove leave them alone. Let it be rich at idle.
75gmck25
Full Access Member
- Joined
- Oct 13, 2016
- Posts
- 2,766
- Reaction score
- 3,067
- Location
- Northern Virginia
- First Name
- Bruce
- Truck Year
- 1975
- Truck Model
- K25 Camper Special TH350 NP203
- Engine Size
- 5.7
Are you sure the anti-tamper plugs that cover the idle mixture screws have been removed? I believe there is a special drill bit that is designed to drill out the plugs, but mine had already been done before I bought the carburetor at a pick and pull.
