TD4 Hot start

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Originally Posted by ianmac

what pump is the "low pressure fuel pump" is that the one in the tank?

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The TD4 has two fuel pumps.

The first is the low pressure (high volume) lift pump that lives in the fuel tank - its sole purpose is to supply fuel to the second high pressure pump.

The second pump is up on the engine and is the injector pump. Its role is to charge the common fuel rail to the very high pressure that the injectors operate at.

Garry

Quote:

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Originally Posted by ianmac

what pump is the "low pressure fuel pump" is that the one in the tank?

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Yep. There are actually three pumps if you count the common rail pump. A low pressure in the tank (a lift pump), a medium pressure electric under the bonnet, and the engine driven common rail injection pump. Having said that, there were some variants that didn't have the tank pump. I think it changed in a certain date range.

EDIT - Garry - sorry, I didnt see your post. My FL1 TD4 definitely has two electric pumps and the common rail pump. Perhaps it's because mine also has the fuel burning heater fitted?

Deleted. Wrong thread sorry.