Also check your gas cap...you said you replaced it...is it vented??? You could be vacuum locking the gas and by blowing back you're releasing the vacuum...just a thought.
Mike B
Mike Boteler
1956 Chevy 3100 Resto Rod 1952 Willys M38 Army Jeep 1983 Jeep CJ7 Laredo 1984 Jeep CJ7 +++++ Silver Spring, MD