[Tom Vaught]

More Solutions: (The Next Several "Hints" will have a lot of duplication because the same "Items" can cause the Issue with the Holley carb.

6) Idle Mixture Screws 'Do Nothing'

a) Reset the Throttle Plates in the Primary bores
(Adjust the Throttle Plates for a "square opening below the throttle blades". Readjust as required.)

b) Increase the INITIAL IGNITION TIMING

c) Lower the Float Levels

d) Reduce the Fuel Pressure to the Needle and Seat

7) Fuel Leaks from the Throttle Shafts/Carb Base

a) Lower the Float Levels

b) Reduce the Fuel Pressure to the Needle and Seat

c) CLEAN or REPLACE the Needle and Seat Parts (Primary & Secondary)

d) CLEAN THE AIR BLEEDS (Fine wire and carb cleaner for a rinse)

e) Reset the Throttle Plates in the Primary bores
(see above for setting).

8) Fuel Dripping from the carb 'Boosters'

a) Lower the Float Level in the fuel bowl

b) Reduce the Fuel Pressure to the Needle and Seat

c) Reset the Throttle Plates in the Primary bores

9) WILL NOT IDLE DOWN

a) Check Choke 'Fast Idle Cam' to see if holding the throttle blades open.

b) Reset the Throttle Plates in the Primary bores

c) CHECK the INITIAL IGNITION TIMING Distributor may be in wrong position or weights hanging up/too light.

d) Check THROTTLE LINKAGE for improper adjustment of Carb Linkage and Trans Linkage

e) Check 'Dash Pot' (if installed) for sticking

f) Check for VACUUM LEAKS

10) Engine Dies below 1200 RPM

a) Check IDLE SPEED SCREW for setting to high

b) Check Throttle Blade Position

c) Check/Lower the the floats in the bowls

d) Check Ignition Timing

e) Check Idle Mixture Screws for One and a Half
turns out from seated on '2 corner' idle circuit carb

f) Check Idle Mixture Screws for 3/4 turns out from seated on '4 corner' idle circuit carb

11) Engine refuses to stay running

a) CHECK FOR GAS IN FUEL TANK AND GAGE OPERATING PROPERLY

b) Reset Primary Throttle Blades for square window at Transfer slot (Blades may be too low)

c) Open up IDLE EZE screw farther

d) Check Idle Mixture screws (see above)

e) Lower Fuel Levels in Bowls

f) Verify Ignition Timing

12) Spark Plugs show excessive RICH Condition

a) Check Throttle Blade Position

b) Check Mixture Screws for 'too many turns out'

c) Lower fuel Level in fuel bowls

d) Reduce Fuel Pressure

e) Check for idle air Bleeds plugged (run fine wire thru them and then spray with carb cleaner - wear face shield or goggles)

f) Bump up the ifnition Timing a couple of degrees.

(More Tomorrow)

Tom V.