Topic: Bleeding the diesel system (Read 1919 times)

robbie · « **on:** February 14, 2006, 23:37:41 »

Is there any special method of doing this??

I have air in the system from changing the Lift pump and am gonna sort it out on Friday.

Is it worth changing the fuel filter while I am doing this?? It seems that the fuel filter cant be changed without getting air into the system

the loon · « **Reply #1 on:** February 15, 2006, 01:05:18 »

what sort of engine?
Best way I 've found is to crack open an injecter(one nearest to front of engine) and just keep it turning over.

word of warning though make sure you have plenty of charge in your battery
once you get fuel coming through put injector pipe back on and let it run for at least 10 minutes before you go anywhere just to make sure its all bled

robbie · « **Reply #2 on:** February 15, 2006, 08:41:01 »

it is a 2.5 N/A

I guess the last resort is to tow it is it? I have heard it can be a pain in the backside bleeding the system, never done it before but looks like my learning curve is going vertical again ;)

timberdog · « **Reply #3 on:** February 15, 2006, 09:04:40 »

I always crack all four and then close 4 3 2 1 but i hear lots of ways each to their own unless 200 TDI then they are pretty self bleed

robbie · « **Reply #4 on:** February 15, 2006, 09:45:01 »

so the secret is to crack each injector then, not do the pipes at each connection?

And what about the fuel filter, should i change this whilst it is all to pot anyway?

timberdog · « **Reply #5 on:** February 15, 2006, 10:00:40 »

Crack the Injector niples (Bolts) and you will have to probally use one hand to keep revs up a little on accelerator otherwise the engine will die on you.

Then work from the back of the Engine Bay after you have let it bleed for a few minutes tightnen no 4 then 3 2 1 that should be it but as i said if it is 200TDI they should self bleed?.

It would make good practice to change Fueal filter and for what they cost good sense but if you do this you may have to bleed the Fuel filter at the top of it you will see a lilltle screw/bolt undo that for a few seconds to let air out then bleed Injectors rarther like you would do Radiators in your house..lol.

Also if you have changed the Fuel filter i always try to fill it up with Fuel when putting it back less of a job when part primed .. you may have to self pump off the Lift pump fue to removing the Fuel filter their is a little metal handle on the side of the Lift pump for this purpose so give it a good few pumps till you feel some pressure the bleed Fuel filter then Injection.

Bet this is clear as Mud..any questions ask mate

Tim

the loon · « **Reply #6 on:** February 15, 2006, 10:18:56 »

what TD says about the filter is right but as said make sure you prime the new filter as saves loads of hassle

robbie · « **Reply #7 on:** February 15, 2006, 12:15:15 »

The car isnt running at the moment so I am expecting loads of problems getting it going again.

I follow the info here no probs, just never done it before ;)

I'll let you know how we get on. We intend doing it Friday this week, ready for weekend

cheers

timberdog · « **Reply #8 on:** February 15, 2006, 12:29:10 »

if its a 200 TDI they are brill for starting i bet ya have no probs

anything we can help with let me know

Mace · « **Reply #9 on:** February 15, 2006, 13:30:00 »

Robbie. With my old 2.5 NAD i used have huge problems bleeding the system. Tried every trick in the book and always had a spare battery charged and at the ready.

The only way I got it to work every time 100% was simple. Get your mate to tow you down the road and bump start it. 1st gear high ratio, 10-15mph and the engine revs are enough to blow the air out the system. Worked every time for me :-)

Don't forget to have your ingintion switched on tho'

robbie · « **Reply #10 on:** February 15, 2006, 13:31:31 »

Thanks Lads, I am thinking the option to tow it is the easiest, I can drag it with the Disco.... I have heard the 2.5 N?A is a bit of a pig to bleed through

hobbit · « **Reply #11 on:** February 15, 2006, 16:45:22 »

You need to locate the bleed screws in the system, fuel filter, then the injector pump, as one becomes running with clean no bubbles diesel, nip it up before you stop pumping, after you have the fuel running at the top of the injector pump bleed screw and tightened, crack the 4 injector nuts on the injector ends, and turn the engine over until the fuel squirts out them, tigten 2 of them and try to start it, all being well it should fire, if it does and if the other 2 are squiting diesel as well nip them up and [-o< she should run on all 4.

If you can bleed up to the top of the injector pump, and she wont start, flat battery or whatever reason, drag the flamin thing round as described above until brum brum occurs (with injector nuts tight), although some presfer 1st gear hi I tend to use second with a diesel

good luck, and do not hit with hammer

Matt_H · « **Reply #12 on:** February 15, 2006, 22:44:28 »

Mr Hobbit is a very wise man and speaketh the truth :)

Matthew

robbie · « **Reply #13 on:** February 15, 2006, 22:57:08 »

all notes thankfully taken..... but I cant promise about the hammer not being used :D

robbie · « **Reply #14 on:** February 16, 2006, 11:56:56 »

:( :( :(

cant do it now tomorrow, I have to go to Leeds

Never Mind, theres always weekend :(

robbie · « **Reply #15 on:** February 17, 2006, 15:59:49 »

Well, got back from Leeds sooner than I thought and took advantage of the mild day today.

Put the new lift pump on. There was a bit of frabbing about cos it needed the studs taking out of the block and the fuel run altering, but we got it on in the end.

Bled the system the best we could but.... as everyone has said, they are not easy to bleed.

SO>>>>>>

We towed it with the Disco, went about 200yds before a little cough of life, another 5-6 yds and another cough, then..... looked in my mirror, loads of black smoke and a happy driver behind........ which of course signified it was running.

Thanks to all for the advice and help here (again, dontya luv Mud Club eh :) )

One last thing though. I didnt change the fuel filter... so when I do, will it need bleeding again??

hobbit · « **Reply #16 on:** February 17, 2006, 19:25:32 »

Err yes and no, before you change the filter, run the the motor up to temperature. Then change the filter, and refill the new filter to the brim, before fitting. When all fitted run the engine up at a medium to high rev, if you are lucky it will pull the fuel through and keep running.

If not a small bleed procedure, or tow the flaming thing again

Glad you got it going though, well done

robbie · « **Reply #17 on:** February 17, 2006, 22:04:09 »

Cheers Kev, I think I will wait until the weather gets a bit warmer then before I do the filter, only emergency repairs in winter ;)

Andy the Landy · « **Reply #18 on:** February 17, 2006, 22:07:01 »

Got your text this afternoon - nice one =D>

robbie · « **Reply #19 on:** February 17, 2006, 22:15:34 »

yeeh Ta, erm, it might not be quite so comfy on the lanes on Sunday then eh . . . . . I'll be in the bone shaker it seems ;)

Shame you cant make it

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AuthorTopic: Bleeding the diesel system (Read 1919 times)

the loon

the loon