FYI - Defender 2007 - 2011 - fuel starvation strategy

[MLD]

this is from the RAVE service manual (pages 801 - 804)

Fuel Tank Capacities
Variant Fuel Tank Capacity
90 - 56 liters (13.2 gallons)
110 (130) - 70 liters (16.2 gallons)

A warning lamp is incorporated in the instrument cluster and illuminates when the fuel level is at or below 10 litres (2.64 US gallons).

LOW FUEL INDICATION AND RUN DRY STRATEGY

The run-dry strategy is used to maintain the systems fuel prime at fuel run out. It ensures the minimum amount of fuel is always left in the swirl pot.

The instrument cluster activates the yellow low fuel warning light, (next to the fuel gauge) with 15% of fuel remaining in the tank. The fuel gauge will indicate empty with 11% of fuel left in the tank.

With 4 liters left in the tank the run-dry strategy will be invoked. An engine mis-fire will be induced for approximately 1 mile after which the engine will be shut down. The engine can be re-started in mis-fire mode and will continue to run for a further mile until the engine shuts down again. This can be repeated until the fuel suction port in the tank is uncovered and causes engine fuel starvation and loss of prime. Re-starts after run-dry shut down are not recommended.

FUEL FILTER

The service interval for the canister change is 24,000 miles.

I went searching for the LPH flow rate of the fuel filter which is not specified in the manual. Closest stat "The fuel system supplies fuel to the engine via a lift pump which is integral to the engine mounted injector pump. The fuel system is a depression system with the inlet pressure at the transfer pump being -30 to -20 kPa".

If anyone knows the LPH, please impart your knowledge. I have an aftermarket RACOR fuel filter and it would be handy to know the flow rate.

MLD

[MLD]

Found the answer to my query in another post

See TimNZ post at #7

Lift pump for Puma Tdci

FYI - TD5 is 180 LPH flow rate

MLD

[Trout]

I can confirm that the fuel starvation strategy works exactly as advertised. Don't ask me how I know. Two restarts got me to the next servo. Even then based on my filling the tank to the brim I was still about 5 or 6 litres short of the 90s stated capacity.

[Trout]

Ohh ......just read the original post again and I see that rave says the capacity for the 90 is 56 litres. I am glad I did not need a third restart as I thought the capacity was 60.