Difference in primer/bleeder pumps
I have a quick question. I recently retired an '84 300D that had the screw-type primer on the lift pump. The '82 240D that I replaced it with has the straight primer pump.
I really liked the screw-type style, which seemed to act also as a bleeder. It seems that this other style pushes air back to the fuel tank to bleed. Is this true?
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