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D2 - Fuel and Exhausts Everything to do with getting fuel into the engine, and fumes back out again

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  #21  
Old 5th July 2020, 05:33 PM
Audifan Audifan is offline
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I'll take a look at it again later tonight as it's way too hot during the day. Last night I was sweating like crazy getting the fuel pump assembly back into the tank. Then I called it quits because I was getting very frustrated not being able to get that fuel line square to thread in the banjo bolt.
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  #22  
Old 14th July 2020, 03:10 PM
Audifan Audifan is offline
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I did manage to get the fuel line square and got the banjo bolt installed. I bought a inexpensive inspection camera so I can take a look to see if I got the fuel pump assembly fuel line adapter (the part with the orange o-ring in my picture below) installed correctly but I'm struggling to find its exact location with the inspection camera . I even opened up the other side of the fuel tank access which I found out has the fuel float device and still having troubles trying to find the fuel pump assembly fuel line adapter. I just want to make sure I have it installed correctly before I finish this pain in the rear fuel pump job.

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  #23  
Old 15th July 2020, 01:06 AM
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27litres 27litres is offline
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What I found is if the pump drops into the tank nicely, chances are the small suction line adapter will drop into the receptacle neatly.
If that is misaligned, the pump assembly will be misaligned and the whole shebang won't sit right in the tank.

If its dropped in nicely, and the arrows have lined up on the top of the tank near the fuel lines, and the long bolt drops in nicely and does up with fingers, I'd say you've got it right.

I remember using my inspection camera to double check myself when i did mine - its hard to find, and took some time with lots of pulling the camera out and adjusting the neck before reinserting, attacking from the left hand tank level sender hole. You need a goods mind eye on where to locate it once the pump assembly is in the tank.
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Last edited by 27litres; 15th July 2020 at 01:14 AM.
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  #24  
Old 15th July 2020, 11:22 PM
Audifan Audifan is offline
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Thanks for the info. I do have the pump assembly in there aligned correctly as it sits flat/square. I didn't really look to see if the arrows lined up at the top of the tank near the fuel lines. I just want to see if I have it correct with the inspection camera for a piece of mind. I'll take a look again this weekend.
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  #25  
Old 16th July 2020, 01:48 AM
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C4R 100N C4R 100N is offline
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Here are some shots that I took which show the 'funnel' that the fuel line adapter sits in. Hopefully you can get some perspective from these. Pictures have uploaded to this site upside down unfortunately so the Front of the car is towards the bottom of the screen. I hope that makes sense.
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  #26  
Old 20th July 2020, 05:31 PM
Audifan Audifan is offline
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I spent about 30 minutes trying to see if I got fuel line adapter in the funnel with no luck so I gave up.

Does this connector plug in only one way? I didn't pay attention to the orientation of this connector when I unplugged it from the tube.


How often does the left side fuel float mechanism fail?
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  #27  
Old 23rd July 2020, 11:25 PM
Audifan Audifan is offline
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Quote:
Originally Posted by Audifan View Post
Does this connector plug in only one way? I didn't pay attention to the orientation of this connector when I unplugged it from the tube.


How often does the left side fuel float mechanism fail?
Anyone?
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  #28  
Old 24th July 2020, 12:25 AM
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Fuel float plug?
I don't think it matters which way around the wires are. I think they just measure a resistance to calculate fuel level.

As for how often that one or the LHS one fail, I cant say for sure, but "not very often" would be my guess!

I've read the dash takes a mean reading of both floats to determine tank level, however I don't see how the lever arm float in the LHS could give any reading above about half full, as the arm can't get there from what I recall. Could be mistaken, it's been about 5 years since I did mine!

When I first came across it, I had thought the LHS might have been for low fuel warning, but if the suction jet pumps aren't working evenly and one side of the saddle has more fuel than the other, this then wouldn't be accurate, so the mean reading makes more sense from that perspective.
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Current:
2001 Audi S8 - Brilliant Black with Black interior, C5 RS6 rims (whenever I actually put them on...), Solar Sunroof, Tinted side and rear glass, RNS-D, Grom, Bose, clunky old phone in arm rest!
2002 Audi S8 - Project
Replacement head coming arrived thanks to MJ
Silver with Black interior. All features as the '01, with the 'S' mode auto shifter. Dodgey rear tint (need to find a way to get rid of that).
Family:
2009 Volvo XC90 V8 R Design
- has a louder more obnoxious exhaust than the S8, sounds great! Love this thing - Q7 was double the price, and certainly not double the car!

Sold:
1997 Audi A4
- Hamilton's Club Sport, Achat Grey (will miss the old girl)

Last edited by 27litres; 24th July 2020 at 12:29 AM.
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  #29  
Old 29th July 2020, 12:15 AM
Shel155 Shel155 is offline
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If anyone's interested. Just recently did this and that video wasn't much help at all. There's a youtube video tho in Russian, which shows... exactly how it's done. Slow it down, watch it a few times and, worked for me. One thing about that seal and cap, I found it's much easier if you lube up the large ring and cap threads with silicone lube, will allow smooth seating of the ring and tightening of the cap. Really don't need the special took for the cap, just tap it down with small hammer and maybe hard piece of wood so as not to damage the tabs? Needs to be quite snug or you'll get leaks and be smelling fuel. Mine wasn't tight enough, had to take it back out and lube up the parts, went smooth after that.
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  #30  
Old 29th July 2020, 02:45 AM
ainarssems ainarssems is offline
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You really don't want silicone grease anywhere near fuel, even small amounts of silicone can contaminate O2 sensors and cats and prevent them from working correctly, engine oil would be better bet.
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Last edited by ainarssems; 29th July 2020 at 02:49 AM.
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