Puma fuel priming tool

[Iain_B]

I bought one of these for priming the fuel lines on my 2011 Puma in case I have to change a filter in the field. Pretty cheap compared to the OEM tool @ $36.00. I have not used it but it fits in the port OK, probably worth extending the other line a bit.

Diesel Injection System Priming Device (http://www.autotools.com.au/catalogue/product.php/1/AT000WH101Aa)

[Drover]

You can change fuel filter without having to prime. So long as you fill the new filter with diesel before fitting.

The only time you will need to prime is if you run ou if fuel.

[lambrover]

Caterpillar have said not fill the filter prior to fitting, as the fuel could be contaminated and it has now bypassed the filter you can damage the injectors.

So just make for sure the fuel is very clean.

[Blknight.aus]

You can change fuel filter without having to prime. So long as you fill the new filter with diesel before fitting.

The only time you will need to prime is if you run ou if fuel.

nope, dont do that....

[Drover]

nope, dont do that....

I watched Hyper Performance Land Rover at Cairns do it 2 days ago to my PUMA.

They used a drum of filtered diesel to fill the new filter with, screwed it on, started it up - no prob's.

Done over 750k's since.

So.......why not ?

[Blknight.aus]

I was primarily refering to running the commonrail out of fuel (editing on the tablet's a pain) but in reference to the filter

because of contamination ok so they filled it from a filtered drum of diesel. howd they get it out of that? from a stop cock drain, from a hand pump? how long since the bottom of the drum was cleaned out? syphon or my favorite one of those hand crank pumps that can pump both ways and whenever whatever your filling is full everyone cranks the pump backwards a handfull of times to get the fuel from the hose back into the drum.

Filtered, Id wager that drum is about as filtered as my language when someone asks me how to do something, blatently ignores me, stuffs the job and then demands that I fix it for them because "well your a mechanic" or when I meet one of those people that makes me have one of those days that garners an entry in the book.

prefilling fuel filters went out with the last of the proper diesels, the ones that dont have a hearty when everything but the intake is underwater. Even then Manufacturers realised that "hey one day someones going to run this out of fuel so lets put a priming pump on the engine to make it easy for everyone to sort this out the first time."

[Drover]

No prob, looks like I mis under stood your reply. The drum was a plastic 5lt and poured into the filter without any addition equipment.

I, at the time did ask what they wre doing and was informed that without pre filling the filter the fuel system will loose prime.

Again, not sure but PUMA's do not have a priming pump, hence this thread were to buy one.

Cheers
Grant

[Blknight.aus]

they dont because its yet another wonderful compromise from ford in the quest for the almighty dollar.

and you dont need one, you can prime the fuel system with a 12v aircompressor and a little thinking

[TimNZ]

You do have to try really hard to run a TDCi (Puma) out of fuel, the ECU will introduce a misfire to warn you that the tank is really low, it will then shut the engine down.

You can keep restarting it until it finally runs out completley, but if you are in a situation that requires doing this I'm guessing you have bigger problems.

Cheers,

Tim

[Drover]

Even then Manufacturers realised that "hey one day someones going to run this out of fuel so lets put a priming pump on the engine to make it easy for everyone to sort this out the first time."


????

[Naks]

You do have to try really hard to run a TDCi (Puma) out of fuel, the ECU will introduce a misfire to warn you that the tank is really low, it will then shut the engine down. You can keep restarting it until it finally runs out completley, but if you are in a situation that requires doing this I'm guessing you have bigger problems.


Yep, I have tried that to see how far I would get on the main fuel tank (I have an aux).

IIRC, the engine hiccups when there's about 4L left in the swirl pot (?). It will keep hiccuping and then shutdown.

Using this method I worked out that I have 80km left when the fuel reserve light comes on. Handy to know when you are on back roads and fuel is running low ;)

[Blknight.aus]

????

the puma's the only engine (so far) thats been fitted to a shed (and as far as i know any other landrover up to its introduction) that (as delivered) is incapable of being bled up after an out of fuel situation with out tools,

[PAT303]

I've been filling filters with both oil and fuel for as long as I can remember and the idea of that ruining engines is rubbish IMHO.I've done it a thousand times and have never had an issue and will do the same with my TDCi,both Land Rover and Ford fill the filters before fitting,I know because I asked. Pat

[pushrod]

I am wondering if diesel fuel injector cleaner would be alright to use
to fill up filter after change? ..a fresh 500ml bottle would fill the filter up nicely
and no risk of dirty diesel...??

[Drover]

I am wondering if diesel fuel injector cleaner would be alright to use
to fill up filter after change? ..a fresh 500ml bottle would fill the filter up nicely
and no risk of dirty diesel...??

Not to sure about that, sounds like very strong dose as it not diluted with the other diesel in the tank.

[Summiitt]

I've been filling filters with both oil and fuel for as long as I can remember and the idea of that ruining engines is rubbish IMHO.I've done it a thousand times and have never had an issue and will do the same with my TDCi,both Land Rover and Ford fill the filters before fitting,I know because I asked. Pat

I agree pat, I always have and always will fill my oil and fuel filters to the brim when changing..when I service my Detroit series 60 truck engines I do the same, yet if they run out of fuel, they will not pick up fuel by the same method, I have a garden weed sprayer fitted with a quick coupler, fill It with diesel, pressurize and it will start, have never run my puma 130s out of fuel so not sure how they pick up...every diesel is different. If you get stuck and are really, really desperate...very desperate! Aerostart will kick an unprimmed diesel, though it's a last resort and I wouldn't recommend it, but it works..

[lambrover]

The reasons are modern diesels run finer tolerances and higher injection pressures and if there are contaminants in the fuel it does more damage. Yes you are able to get away with it in older mechanical style injection but common rail and electronic unit injectors aren't as forgiving.

I have just come of a course on the Bushmaster that has a Caterpillar engine and CAT specify not to pre fill filters, and for the reasons given.

So by all means keep doing what your doing but don't cry when your engine blows smoke and your injectors need replacing.

Education is not just for kids!

[PAT303]

Caterpillar have been saying that for years,every mine site I've worked on specify that ALL filters be pre filled. Pat

[GlennWA]

<snip> both Land Rover and Ford fill the filters before fitting,I know because I asked. Pat

The electronic copy of the workshop manual for MY12 does not give directions to pre-fill the filter, instead it directs a re-prime of the system using the 'special tool'.

It does not explicitly state not too either. I would suspect if a dealer is filling filters prior to fitment then there could be grounds for disputes should the fuel system fail and they have adopted this practice as a shortcut. The issue being any damage caused by this procedure will most likely not be evident until after the warranty has expired-the dealer therefore has no incentive to do things right!:mad:

[lambrover]

Caterpillar have been saying that for years,every mine site I've worked on specify that ALL filters be pre filled. Pat

CAT would know more about protecting its engines then the mines do.

As GlennWA has alluded to work shops would be in big **** if you could prove your engine failed due to bad practice.

The reason people do it is its quicker, but you run the risk of contamination.

Like I said I don't care what you do just relaying what the best practices are.

[Bundalene]

When I rebuilt our Puma the system was completely drained. The fuel priming device did not work in this situation. I removed the device, leaving the line open to drain into a container and primed the system by putting slight pressure into the tank via the tank breather line. It took no time at all to remove all the air from the system - quite easy once you know how.


It is important to have an open line and not to over presurise the tank though


Erich