Intake Manifold Gasket (400" & 401" Auto. Trans. Engines)
Install Synchro-mesh Trans, engine gasket which has larger heat holes (this gasket can be identified by 1/4" punched hole in projecting corner of gasket).
- 1966 BUICK STALLING AFTER STARTING CORRECTION (All Models):
Make certain that correct starting technique used (push accelerator pedal to floor once only to allow choke to close and position fast idle cam, do not tap throttle again until engine begins to pick up speed, then tap throttle to position fast idle cam on warm-up step to prevent excessive speed during prolonged warm-up). Check the following adjustments: Fast Idle Speed, Fast Idle Cam Position, Choke Piston Linkage, and Automatic Choke Setting. Make certain choke valve operates freely and is barely closed at 80°F.NOTE: For repeated complaints, choke may be set not more than 2 Notches Richer than specified setting (richer setting may result in car not starting in extreme cold weather due to overchoking).
- 1966 BUICK 407" ENGINE FLATNESS & HESITATION DURING WARM-UP CORRECTION:
On cars with carburetors having code letter prior to "B" on tag, correct this complaint by installing Choke Baffle Plate, Part No. 1372400, as follows: Install baffle with 1/4" raised diameter area in 1/4" bore in choke housing so that thermostatic coil tang projects through small hole in outer baffle. When installing choke cover, open throttle slightly to clear fast idle cam, rotate choke cover until choke valve closes, then rotate cover until index mark lines up and tighten cover screws. Check by moving choke valve from full open to closed position (any interference indicates that baffle not properly located).NOTE: Carburetors with code letter "B" or later on tag have this baffle installed.
- 1966 CADILLAC FUEL TANK VENT CAUTION: Cars before No. 124828 have fuel tank vented through gas cap and vented caps (stamped VENTED) must be used on these cars. Later cars have fuel tank vented through a vent pipe.
- CADILLAC ENGINE NOT IDLING: Steel shim must be installed between carburetor throttle body and upper carburetor mounting gasket. If engine will not idle, make certain this shim installed.
- 1966 LINCOLN ALTITUDE OPERATION CONVERSION: If car is consistently operated in high altitude regions (5, 000 ft. or greater), carburetor should be converted for high altitude operation by replacing standard carburetor metering rod with special Altitude Metering Rod, Lincoln Part No. C6VY-9A526-B.
- 1966 LINCOLN POOR FUEL ECONOMY CORRECTION:
To correct customer complaints, fuel economy can be improved by installing leaner metering rods, Lincoln Part No. C3VY-9A526-B, and changing Choke Piston Linkage setting to.090-.110" (superseding previous specification of.100-.120").NOTE: Carburetors with above changes can be identified by daub of blue paint on fuel inlet boss.
- 1966 LINCOLN HARD COLD STARTING & POOR FUEL ECONOMY CORRECTION: This condition may be caused by binding condition between choke rod and choke lever resulting from crimping at bend of lever. Remove and inspect rod for deformation at the bend and correct by using a file and sandpaper to smooth up rod.
- 1967 LINCOLN CARBURETOR ACCELERATOR ROD STICKING OR BINDING CORRECTION (Cars with Automatic Speed Control): If this trouble noted on cars built prior to 9/26/66, remove air cleaner and check for inadequate clearance between accelerator rod and speed control cable bracket (see Fig 1) by moving accelerator rod rearward toward firewall and releasing slowly. Clearance between rod and cable bracket must be at least 1/16" for free travel of the rod. Disconnect rod and grind or file stock from bracket as shown to provide clearance.
- 1966 PONTIAC & TEMPEST FUEL STARVATION CORRECTION: If car starts and then "runs out of gas" in cold areas, install new Intake Needle & Seat Assembly, Part No. 9785780, stainless steel type (replaces former brass needle).
- 1966 PONTIAC & TEMPEST IMPROPER CHOKE OR THROTTLE OPERATION CORRECTION: May be caused by carburetor throttle lever binding against fast idle connecting rod. Check by operating throttle lever and noting any interference between lever and rod. Correct by filing or grinding 1/8" from inside edge of throttle lever in area affected.