My 63 Polara 500, 383, 4 barrel Carter AFB, has trouble starting when it sits for several days. It always goes eventually but takes 20 or 30 seconds of cranking. A little research (see link below) suggests that modern gas evaporates quickly and the carburetor bowl evaporates through the bowl vent. They suggest priming the bowl through the vent with an eye dropper. Does this make sense? Is there any kind of gas additive that would help prevent evaporation? http://www.thecarburetorshop.com/Troubleshooting.htm As always, thanks. - Jim Jim Altemose, Long Island, NY '63 Polara 500 (Max Wedge) '63 Polara 500 (383) '65 Belvedere I (Street Wedge) '71 Bronco ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! 1962 to 1965 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.