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Discussion Starter · #1 · (Edited)
I'm probably going to go look at a 4bt next week for swapping into my Jeep. The seller says it has an inline pump on it. I'm familiar with p-pumps but know nothing about a-pumps. I assume they are visually distinguishable from the outside? Anyone have a pic of one for me? Thanks.

Chris
 

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A pumps are quite different to a P pump, I think less fuel delivery and a different method of tuning.

On the Isuzu's, the 4BD1 non turbo has an A pump, the turbo 4BD1T has a P pump.
 
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