2006-11-07 10:10:28 · 5 answers · asked by pjt123x 1 in Cars & Transportation ➔ Other - Cars & Transportation
a regular four barrel only has an acceleration pump in the two primary bores where as a double pumper has it in all four,these are use to prevent stumble or hesitation on acceleration
2006-11-07 10:13:36 · answer #1 · answered by doug b 6 · 1⤊ 0⤋
no, a four barrel has four venturis ( throats , to pass air fuel ) a double pumper has 2 accelerator pumps , these give a shot of fuel into the airstream to allow smooth stumble free acceleration during the transition from idle to other " circuits " in the carb
2006-11-08 06:12:27 · answer #2 · answered by sterling m 6 · 0⤊ 0⤋
A double pumper carburetor is one with an accelerator pump on the bottom of the main fuel bowl and also one on the secondary fuel bowl..the secondaries are mechanically opened so you need that extra shot of fuel to avoid a lean condition..
2006-11-07 10:31:38 · answer #3 · answered by Dirtydog 5 · 1⤊ 0⤋
No,double pumper means that the carb. has two accelerator pumps in it.Four barrel means that the carb. has four venturi's.
2006-11-07 10:49:46 · answer #4 · answered by thomas t 3 · 1⤊ 0⤋
no.
a four barrel has four venturis thats it.
all double pumper carburetors are single stage. i.e. mechanical secondaries.
all double pumpers are four barrels, but all four barrells arent double pumpers.
2006-11-07 10:16:24 · answer #5 · answered by supahtforyou 4 · 0⤊ 2⤋