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Air in Fuel Lines.

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AlanMcR
Posts: 7729

Re: Air in Fuel Lines.

Post#171 » Wed Apr 01, 2020 4:21 pm

The lines come off by pushing in the white tab. Similar action on the metal ones. Then gently hook the o-rings out of the slots. There are o-rings everywhere, the shutoff valve is the one that people miss the most often. Two T30 Torx bolts get it off of the IP. Twist a bit and pull.
...Alan

Court
Posts: 812

Re: Air in Fuel Lines.

Post#172 » Wed Apr 01, 2020 4:42 pm

Thank you Alan,

OK I will check NAPA ,,, or another local guy for european car parts guy,,, hope he can get the correct ones for me.

I am approaching this with some trepidation thinking it will be a hard starting effort once done. I assume one fills the new fuel filter I plan to install with fuel or purge solution. It is so dam difficult to get ones hands into the area ,,, it makes sense to take off the IM it seems,,,, got a new gasket for only $19 CDN.. so not such a big deal if have to do it again if I decide against doing the glowplugs this time around.

User avatar
vadimivanovich
Posts: 8643

Re: Air in Fuel Lines.

Post#173 » Wed Apr 01, 2020 5:24 pm

I buy mine from McMaster Carr, but I'm sure there are other sources if you don't need a whole bag of each size. MB sells them at a 10X markup I assume. Do you folks have McMaster up there? O-rings can be removed with a sharp pick tool.

No need for a new IM gasket. Many of us have re-used ours repeatedly for years. Not a bad idea to have a spare on the shelf I guess, but it's a metal gasket that does not seem to degrade quickly.

Re-starting after the o-ring job is usually not too bad, but yes, fill the filter with diesel purge and top off the battery before you begin.
"The way you think is the way you live"

autonovice
Posts: 2560

Re: Air in Fuel Lines.

Post#174 » Thu Apr 02, 2020 1:12 pm

Court wrote:OK I will check NAPA ,,, or another local guy for european car parts guy,,, hope he can get the correct ones for me.


Pls buy from MB. Pay up and save your trouble for the 2nd time. They are open but 50% staff reduction!

Please check below if I miss any O rings related to fuel system.
  1. #8 fuel filter kit ( has 2 O rings )

  2. #35 A601 997 04 45
  3. #98 A601 997 04 45
  4. #122 A601 997 04 45
    total: 3

  5. #38 A601 997 03 45
  6. #59 x2 A601 997 03 45
  7. #77 x2 A601 997 03 45
  8. #89 x2 A601 997 03 45
  9. #101 A601 997 03 45
    total: 8

  10. #29 A601 997 01 48
    total: 1
Capture.PNG

Court
Posts: 812

Re: Air in Fuel Lines.

Post#175 » Thu Apr 02, 2020 6:34 pm

Thanks Minh.

This is much appreciated.

User avatar
AlanMcR
Posts: 7729

Re: Air in Fuel Lines.

Post#176 » Thu Apr 02, 2020 7:58 pm

The shutoff valve is missing, my notes say A0219977548.
Also, take a look at what the factory plastic fuel lines cost. They come with o-rings in place.

Looking at this from a standard parts perspective:

1x 2.5mm x 12mm ID – Shutoff Valve
http://www.mcmaster.com/#9263K236

9x 2.5mm x 8mm ID - Fuel Line
http://www.mcmaster.com/#9263K124

3x 2.5mm x 10mm ID – Fuel Line at filter housing (and others)
http://www.mcmaster.com/#9263K232

1x 3mm x 18mm ID – Pre-Filter
http://www.mcmaster.com/#9263K309

6x 2mm x 15mm ID - DeliveryValve Seals
http://www.mcmaster.com/#9263K299

The McMaster links may be out of date, but the sizes aren't. Changing the delivery valve seals should be reserved for when it actually leaks. It is possible to mess up the pump trying to replace these.
...Alan

Court
Posts: 812

Re: Air in Fuel Lines.

Post#177 » Fri Apr 10, 2020 4:55 pm

Ok today seemed like a Good day to do a diesel purge!!!

I began by assembling my hoses and Lubrimoly purge. You can see my set up which worked perfectly except I had to add the clamp on the connection between the prefilter piece I bought from MB for about 20$ or so. Well worth it in my case I think. I simply disconnected the tank feed from fuel heater at the fuel filter housing and plugged in the new shirt line as you can see. The large clear vinyl line connected with a clamp is a bit too large a diameter because it takes a lot of purge to fill it. Next time I might try to find a way to neck down. I then released the return line and connected a short length of a line I had to heat and stretch to fit the diameter of the return fitting. It was all I had in hand and trying to respect the stay home request could not go out Tibet different more flexible line. These two lines were placed in a clear plastic clean dry Evian water bottle found in the street !!

I videoed the cold start and nailing sound that I was thinking is what the purge might correct. Tomorrow I will video a cold start and see if it has improved things. I think it did smooth some things out.

It was interesting to see how much fuel/ purge bypasses back to the reservoir of purge. Also to see the fine bubbles in the purge.

It took a bit of cranking to get it going and would have been easier if I had added the hose clamp at the beginning.

Hope the following photo is of interest.

3447A8E3-A918-4371-884F-609743F84D51.jpeg


I tried to add a video but could not figure it out. If I do I will add it.

Court
Posts: 812

Re: Air in Fuel Lines.

Post#178 » Fri Apr 10, 2020 4:56 pm

606A0B4A-345F-4FB9-858F-A57398D0850E.jpeg



One more photo of set up installed.

Court
Posts: 812

Re: Air in Fuel Lines.

Post#179 » Fri Apr 10, 2020 5:50 pm

Needs a better photo so here is another.

This shows purge reservoir where red funnel is and the return line and purge sucking line installed.


6D9F767D-B691-45D2-9DAC-9151A0696D26.jpeg

Court
Posts: 812

Re: Air in Fuel Lines.

Post#180 » Fri Apr 10, 2020 5:53 pm

Can’t seem to add video ... was going to illustrate the nailing on cold start and then what it sounded like after purge treatment.

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