Thread: Puma Fuel pump.

Could you put a solid state in line electric fuel pump in the fuel line to assist in priming ?. They don't cost that much.

Originally Posted by TimNZ

In a combined 120,000 "Puma" kilometers I've never been in a position where I have had to prime the fuel system, (touch wood ). If the worst happens I'm sure I can rig up something to pressurise the fuel tank via the breather, (as Bundalene did).

Cheers,

To be honest, I don't think everyone even knew about the air issue when the Puma was launched. I was with a convoy travelling in North Africa a couple of years ago and as usual we all had to change fuel filters a couple of times during the trip (all but the "Africa" spec 300Tdi's with their pre-filter sediment traps). We had 2 brand new Pumas with us and their owners just used common sense and filled the filters prior to installing them (which I've always been taught to be standard practice?). There was never any issues and those Pumas (one a SVX) both ran faultless over the odd 2500km of the trip. In fact the 2.5TD's were harder work with the dirty fuel (paint flakes and rust from old bulk tanks) with air in their diesel systems.

I've got one of those hand pump widgets in the toolbox for an unforseen eventuality, but with a bit of luck I'll never have to use it!

Hi guys, I know this is an old thread but..... I have a 2.2 2013 Puma Defender that, for reasons I won't divulge , got a hole in the main (the bigger one) fuel hose from the tank to the filter (the hole was right on top of the chassis rail right where the rear spring bracket is). Anyway, when I turned on the ignition, fuel gushed out of the hole, then when I turned the ignition off, it stopped! I looked in the fuse box and found a 15amp fuse labelled "FUEL". I removed it, turned on the ignition and no fuel came out of the hole. I replaced it and fuel started leaking again...... Therefore, unless the 2.2s are different to the 2.4s, they must have a pump in the tank. I cant think of any other way it could come gushing out of the main fuel hose.

Originally Posted by TimNZ

Sorry, but I've got to have a laugh at some of the statements that appear on this forum....

"Well, I don't know about these new "electric" defenders, just more to go wrong!!!"

"What, they got rid of an electrical part! That's just cost cutting!!!"



In a combined 120,000 "Puma" kilometers I've never been in a position where I have had to prime the fuel system, (touch wood ). If the worst happens I'm sure I can rig up something to pressurise the fuel tank via the breather, (as Bundalene did).

Cheers,

Gotta love the knockers,I still haven't used the Tdi priming pump and I've had it 16 years. Pat

Interesting - I did a search and there are a few other references to an in tank fuel lift pump on the 2.2, and indeed I checked my owners manual and it mentions the Fuel lift pump fuse.

Is it possible that Land Rover reintroduced a lift pump to avoid fuel priming issues on a fuel filter change?

Originally Posted by BilboBoggles

Interesting - I did a search and there are a few other references to an in tank fuel lift pump on the 2.2, and indeed I checked my owners manual and it mentions the Fuel lift pump fuse.

Is it possible that Land Rover reintroduced a lift pump to avoid fuel priming issues on a fuel filter change?

I'd say its very possible they did. All I know is you can definitely hear a pump working when you switch the ignition on and hear it immediately stop when the fuse in question is removed. And in my case, fuel leaking from the busted hose stops immediately too.

My 2.2 has a fuel pressure pump in the tank, just like a petrol EFI system the fuel pump comes on when the IGN is ON, then stops after priming the system, one the engine is started the fuel pump continues to run due to the crank angle sensor signalling the ECM.
There should be no need to bleed the fuel system with special tools, as there is a Schrader valve near the main pressure fuel pump, surely all you need to do is depress the valve when the IGN is first switched ON, when I drained the fuel filter all I did was to open the drain valve and turn the IGN ON and the fuel pump in the tank flushed the filter.

Originally Posted by thejonoaffair

unless the 2.2s are different to the 2.4s, they must have a pump in the tank

Correct, the Defender Puma 2.4 has no in tank lift pump, the newer 2.2 has an in tank lift pump.

Regards
Daz