How to do Diesel leak off test and what is it?

Рет қаралды 12,501

Norfolk Man cave

2 жыл бұрын

So what's a Diesel leak off test and how do you do them? we will find out on this 2006 170,000 miles Jaguar 2.2 Diesel.

Пікірлер: 41

@tonybreeze8516 10 ай бұрын

Thanks … one chap on the net said that while you are doing this you should plug the leads that go back to the common rail so that air doesn’t get in.

@liviustelianbotanoiu906 3 ай бұрын

Thank you! This answers my questions on how it works, how you determine which one is bad and why it is bad.

@sallywest5634 2 жыл бұрын

Another interesting watch thanks for sharing Adam.

@stevenryan6008 6 ай бұрын

That was a great video !! I’ve got a misfire on my Range Rover. Local garage €126 an hour to tell me which injector needs changing. Much appreciated !!

@cherryred1732 2 жыл бұрын

Yes. Very good. I always do same now. After been stung with a diesel specialist. Who had my pants right down. As being one injector down. But they went a changed all 4 of them regardless. And charged over a grand . So makes sense to do leak test. And buy a recon injector and fit myself. And recode with a launch programmer if needed. Fully enjoyed seeing you do that. Really was interesting.👍

@ndy400 Жыл бұрын

You sir, have the strongest norfolk accent I’ve ever heard😅😂

@NorfolkMancave Жыл бұрын

Lol.. yeah pretty strong. Hope you could roughly work out what I was getting at? 🤣🤣

@JAYG6390 2 жыл бұрын

Never knew my car had this sort of thing - very interesting! Look forward to the follow up video

@NorfolkMancave 2 жыл бұрын

yeah quite advanced for there age. I must say I love this car. I know she's old but she's bought and paid for and mine.

@royjennison3916 2 жыл бұрын

it needs three injectors in it , also replace the pipes from the rail to the injector and torque up

@caemaridwn 2 жыл бұрын

Hope you do a video when you change the injectors, thanks for sharing.

@NorfolkMancave 2 жыл бұрын

yeah I will video when I change them. I need to save up my Penny's and stop buying old engines tho. lol

@cav551 7 ай бұрын

nice video of your orange overalls

@robertcoldham6849 2 жыл бұрын

I believe common rail fuel pressure is alot higher than 2000 psi, more like 2000 bar (29000 psi) or even higher with more modern diesels

@sollykhan2385 5 ай бұрын

newer cars up to and above 60,000 psi esp the Euro 6,as higher pressure and smaller amount of fuel gives less smog,higher pressures actually do most of the job as it smacks the piston down on the power stroke with less fuel needed for combustion.

@nick2203 2 жыл бұрын

I work for a motor factors and by coincidence a garage I called at today were doing a diesel leak off test. As you say definitely two injectors need replacement, it might be worth replacing the third one depending on cost. If you replace all 3 you will have future proofed it.

@NorfolkMancave 2 жыл бұрын

Yes I think I will do all 3. depending on price.

@andrewlittle7668 2 жыл бұрын

When you change injector make sure you take note of the codes and wich bore you put them in as they need coding and you cant see them with rocker cover on

@mrfishbulb7187 2 жыл бұрын

How about trying to clean the bad injectors in an ultrasonic cleaner, pulsing them whilst running through some injector cleaning solution.

@philipmaguire9209 Жыл бұрын

Great thanks

@NorfolkMancave Жыл бұрын

You are welcome

@slvs91 8 ай бұрын

How much diesel is supposed to come through the return line pipe while doing this test, stuck my return line in a 1.5l bottle and filled it up to 1 litre in just5 mins, injectors seems to filled to 5ml mark all of them . Thanks

@cagatay-pg2pp 6 ай бұрын

What mm these pipes which into enjection? Thanks

@ambientsounds1416 4 ай бұрын

Does this test shows if the injector is stuck closed right? Is this test useless if the injector open? I guess what Im saying is that it is more likely that the Inj2 is the opwn one and needs replacing where's the other 3 are ok. Wouldn't that make more logical sense.

@officialsked Жыл бұрын

Funnily enough after 2 weeks of being recommended this video, my 1.9 TDI (non pd) has started gushing out diesel from its 4th injector which is actually leaking out of the pipe where it sits on the leak off nozzle. Bought a leak off test to arrive tomorrow but with the diesel actually leaking from the hose itself, is that a case of the injectors that ruined or is there a sign of something more serious like an overload in leak off pressure?

@NorfolkMancave Жыл бұрын

Hello there. Normally the leak off pipes are just made from that braided rubber hose. Not high pressure stuff. It's common for the to perish and leak with age so don't panic. You can buy that pipe in sets of 4 from Halfords I think. Do your test with the engine up to temperature as I did on the video mate. You only need to run it for 2 or 3 mins. The VWs are pretty good engines. Let me know how it goes mate. You can message me through my Facebook page if you rather. Good luck buddy. 👍

@craiggriffiths753 13 күн бұрын

How would you know if an injector was blocked

@josepeixoto3384 Ай бұрын

what are the factory specs on that,anyone knows? thanks

@t5jerry 2 жыл бұрын

i reckon you`ve got 3 injectors which are cream crackered mate, really it needs 4 injectors in it and as most injectors pack up within a few thousand miles of each other, you might as well get a WHOLE set of 4 , and that`s going to cost what the jag`s worth , UNLESS your either going to rebuild them yourself which is not that hard or buy recon injectors which if your keeping the jag, is a no no.