Idle Air Circuit 4053 Holley

[69 Code51 Z]

Any suggestions on checking for a plugged idle air circuit? Car starts fine,runs fine off idle - but when you come to a stop engine drops off. Car isn't driven and is stored in a heated garage. No fuel additives ( suggestions ? ) only racing fuel used. Carl

[WILMASBOYL78]

Contact Eric at Vintage Musclecars on this site..he is the man on Holley issues!!

wilma

[VintageMusclecar]

Carl;

(assuming the idle trim screws have no effect on idle at this point? If not...)

Remove the carb from the engine, then remove the trim screws from the metering block (don't lose the cork seals) and give it a good blast of carb cleaner, followed up with a shot of compressed air. You should see carb cleaner squirt from both the idle air bleeds inside the choke tower and the curb idle discharge ports on the baseplate. If not, it's likely clogged with debris and you'll need to pull it down to clean it.

Eric

p.s.

Thanks for the plug Tom

[69 Code51 Z]

Eric Thanks - Will give it a try. Carl