Nissan Patrol 4x4 (Africa)

Alex Roux wrote:

Wilkie wrote:Ja I think Peter is correct in saying that its the dirt going through the pump that kills it.....
every time you replace a fuel filter its dirty and murky and that is after its been through the fuel pump....

Okay, but if the pump is that sensitive to dirt, then what is the point in having a filter after the pump?
The fuel should then already be as clean as a whistle when it reaches the pump, right?

Fuel filter is for the fine stuff that may do something to an injector. Sand is not supposed to get into the tank!! And that is what the teabag is for.

Yes, the filter is there to protect the fuel metering and injection components.

The problem with an external pump is that it needs to be below fuel (although pumps do differ in tems of how much they can suck).
And this location in a Patrol may well be pretty vulnerable.

What I did in the aforementioned installation was to use a low-pressure pump (in this case a Facet solid-state pump) to mump the fuel to a "swirl tank". This was around 2-3l capacity and shaped somewhat like a closed funnel. The high-pressure pump was fitted below this swirl tank. The return line from the engine was also re-routed to the top of the swirl tank.

I guess if one can find room for such a swirl tank in the engine bay somewhere, it might be a good solution.

What about a big filter before the pump with not so small mesh filter???

Tinus lotz wrote:What about a big filter before the pump with not so small mesh filter???

Tinus

I would like that, but at the moment the sender unit only just fits inside the tank with the little tea-bag filter at the bottom (having shortened its nozzle a bit).
In other words the whole contraption becomes too tall and the tank is not deep enough at that point