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Great.
What is the pumping sound when engine is still in early video? I'm guessing boiler feed pump?
I couldn’t say for sure but I would guess your guess is probably correct.
Brakes air pump
Great.
What is the pumping sound when engine is still in early video? I'm guessing boiler feed pump?
I couldn’t say for sure but I would guess your guess is probably correct.
Brakes air pump