Thread: Puma fuel priming tool

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.

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.

Originally Posted by 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.

nope, dont do that....

Originally Posted by Blknight.aus

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 ?

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."

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

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

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