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Avocet1

Well-Known Member

• Jun 10, 2019

• #1

...hanging by the right hand chassis member just ahead of the rear wheel? It has pipes on it and an electrical connector. I only ask because its bracket has rusted of and I noticed it dangling down the other day! It's now back in place with a hefty cable tie, but I just wondered what it was. Some kind of fuel pump?

 

Last edited: Jun 10, 2019

pardec

Active Member

• Jun 10, 2019

• #2

housing for fuel pump and filter

 

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Avocet1

Well-Known Member

• Jun 10, 2019

• #3

Thanks. It's very small though - maybe about the size of a cotton reel? Surely to goodness there can't be a pump and filter in there? (It already has another couple of filters in the engine bay)!

 

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Avocet1

Well-Known Member

• Jun 10, 2019

• #4

Our previous X-Trail had a "saddle" tank, over the propshaft, so they fitted a little "transfer pump" to suck petrol out of the half with the fuel filler neck connected to it, and chuck it into the half with the fuel pump in it. Might it be one of those?

 

pardec

Active Member

• Jun 10, 2019

• #5

dosing pump for the fbh

 

pardec

Active Member

• Jun 10, 2019

• #6

its usually inside the main pump/filter housing

 

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Avocet1

Well-Known Member

• Jun 10, 2019

• #7

pardec said:

dosing pump for the fbh

Click to expand...

Sorry to show my ignorance here, but what on earth is an "fbh"?!

 

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Avocet1

Well-Known Member

• Jun 10, 2019

• #8

pardec said:

its usually inside the main pump/filter housing

Click to expand...

That still sounds odd. I'm not sure we're talking about the same bit here. I've attached a photo of the bit in question. Does that ring any bells?

 

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Arctic2

Well-Known Member

• Jun 11, 2019

• #9

Yes it looks like the fuel burning heater pump, it usually resides behind the OS rear wheel arch liner.

 

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Avocet1

Well-Known Member

• Jun 11, 2019

• #10

Arctic2 said:

Yes it looks like the fuel burning heater pump, it usually resides behind the OS rear wheel arch liner.

Click to expand...

Ah! Thanks. So "FBH" is "Fuel Burning Heater"?

Thanks for the photos too. I can recognise the "lump" in them and it does seem to be in its original place, on a plastic bracket on the side of the chassis. I've now found a photo of it in the Haynes manual, so that confirms it!

I haven't pulled the wheelarch liner down to see the other components though. The question then, is what are they? I can see something that looks like a pump and a filter, but if they're not for the FBH, what are they for? Also the small black pot with some sort of drain tube at the bottom? The Haynes manual isn't much help if you don't know what something is called!

 

Nodge68

Well-Known Member

• Jun 11, 2019

• #11

Avocet1 said:

I can see something that looks like a pump and a filter, but if they're not for the FBH, what are they for?

Click to expand...

The large pump is the low pressure (LP) pump for the engine, and the filter is the fuel filter.
Are these just open and hanging, or are they in the plastic tray they are fixed to, just in front of the rear wheel?

Avocet1 said:

Also the small black pot with some sort of drain tube at the bottom?

Click to expand...

That's the fuel sedimenter, where water and other large particulates collect. It should be drained every oil change.