Help on fixing a vapor lock!!!
It’s a 73 swinger with mopar electronic ignition. Holley 1bbl
Read what Chrysler was telling their techs about vapor lock and fueling problems.
Some vapor in the top of the fuel filter is normal, but should not fill the whole thing!
Tilt the filter up so it bups out like Chrysler started doing in '63
Carburetion and Performance Diagnosis (Session 188) from the Master Technician's Service Conference
Changes in fuel, the need to run hotter idle temps, and the vapor controls sometimes called for additional measures.
Some car/engine combos got a special fuel pump with a small internal bypass.
Techs in '72 were reminded they could use the external bypass kit for cars without the special pump that had hot start flooding.
1972 Imperial & Chrysler Engine Performance Facts & Fixes Service Book (Session 291)
For 1973 specific info, scroll down
Master Technician Service Conference - Chrysler's Training for Mechanics
there are 3 sessions that may be helpful to you
Cleaner Air System Highlights
Getting them Started
Exhaust Emissions and Drivability.
I removed the fuel pump to carburetor line and covered it with 3/8" rubber hose split and put over it and fastened with zip ties. It made a difference with my truck. Rubber hose is a good insulator.
That's smart thinking.
Long runs of rubber hose are never good.
And I’ll have to watch the choke on the car as idles.
Automatic chokes have three parts of operation.
Full choke when you set it by moving the throttle before starting.
Qualified when the flap opens slightly with engine starting. Vacuum from engine is used to open it to this position.
Opening as the bi-metal coil heats up,. In '73 assisted by an electric heater when temperatures are above 60 F.
As far as the 'new and improved' flat needle and seat, that's some SSS.
Daytona's 'improved' Inlet Needle & Seat?
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