The start of my a2 adventure

Navek

New Member
Well firstly thank you for allowing me to join your forum and hello to all.
My first impressions of this car was that is was an aluminium tractor, as the engine nearly jumps out of the engine bay every time it kicks into life, and the fact that it leaves a fuel patch behind every time I park only cements the fact.
I think there is a cricket living in the back as it sings ( squeaks ) to me every time I go over a bump. I think it might also have control over the heater as this is hot all the time. Maybe it sits on the back seat shades on sipping diesel pina colada's.
I have taken the time to read a few threads on the heater control sticking and the fuel filter being over tightened, I’m not to bothered with the squeak in the rear as I’ll wait until the mrs is in the car so she can hunt it out.
I decided to look at the diesel leak first, as I’m having to park in a different spot every day at work to prevent the total decay of their tarmac in one spot.
Well as expected someone had busted the drain plug and tried to fix it with some wriggleys spearmint gum. So as a temporary / permanent repair I’ve drilled and tapped an m8 thread through the m10 bolt head on the bung and screwed an m8 set screw through so about 15 mm sticks out the other end. I then drilled and tapped an m8 thread up the centre of an m10 bolt. Cut the bolt to length and screwed it on to the protruding m8 thread. Put this on my drill and with the drill in a vise and turned on I used a hacksaw to cut a groove in the m10 thread to take the small o ring.
If you are still reading this I’m impressed and if you understand what I’ve just written then I am really impressed.
Well I fitted my temp repair and was happy the engine started straight away however you know what I’m going to say next “ it stopped “ .
I can’t believe how long I had to crank it over before it re started this can’t be right. Well this was all done tonight and I won’t be able to tell wether or not my efforts have worked until tomorrow. The suspense is killing me!
Anyway my a2 voyage is now well under way.
 
Hello and welcome. If you are pulling air into the diesel feed that is probably the issue. There is an extensive recent thread on here.
 
Squeaks or groans at the back end could well be the rear subframe bushes - for general NVH with a newly-acquired non-club-member A2 you have to think about all the various rubbers and bushes front and rear as they deteriorate at 20+ years old, generating creaks, knocks and other road-surface-related noises. That being said for relatively minimal cost (I use the Febi catalogue for these bits) and a bit of spannering it is possible to transform the car completely.

Sounds like you are getting or have air in the fuel line and that it is draining back from the tandem pump between runs.

Rear subframe bushes are visible in this diagram -


part 7. Roll your mouse over the magnifying glass by the hidden part number and the part number appears as a linked URL in the bottom corner of the screen. You can then search for this and find suitable substitutes from suppliers like Febi, Meyle etc.
 
Your leaky diesel could be that plastic fuel filter nut. Have a look under the car passengers side front of rear wheel where fuel filter sits where it leaks from I bet it's from top of the plastic nut. If so you can get one made out of stainless steel from one of our members which stops the leaks.
 
welcome. As a newbie you might well try the forum search but it's not very good. A better way is to use a normal search engine and add a "site:" qualifier. For example to search on "fuel leak" type:

site:a2oc.net fuel leak

As you found, if you get air into the fuel line it's hard for the engine to then suck the fuel through. Even my independent Audi dealer got air in when changing the fuel filter and then flatten the battery and had to keep it overnight. I think it knackered the 1 year old battery.

@depronman provides an improved TDI Fuel filter drain screw


I hope you get all your problems solved and can enjoy many years of A2 ownership.
 
welcome. As a newbie you might well try the forum search but it's not very good. A better way is to use a normal search engine and add a "site:" qualifier. For example to search on "fuel leak" type:



As you found, if you get air into the fuel line it's hard for the engine to then suck the fuel through. Even my independent Audi dealer got air in when changing the fuel filter and then flatten the battery and had to keep it overnight. I think it knackered the 1 year old battery.

@depronman provides an improved TDI Fuel filter drain screw


I hope you get all your problems solved and can enjoy many years of A2 ownership.
Thanks for your input Alan, yes I was a bit gob smacked as to how long it took to re start after bodging the filter issue ( which is currently working ) I’m surprised there isn’t a hand primer on the fuel line or something . I used a spare battery on jump leads in the end as I could tell the battery was getting tired of cranking . God knows how the starter is still ok.
Crawling underneath the car making sure I’ve sopped the fuel leak has highlighted yet another problem, my front cross member is dripping with oil from I suppose is the engine. What have I let myself in for.
 
Thanks for your input Alan, yes I was a bit gob smacked as to how long it took to re start after bodging the filter issue ( which is currently working ) I’m surprised there isn’t a hand primer on the fuel line or something . I used a spare battery on jump leads in the end as I could tell the battery was getting tired of cranking . God knows how the starter is still ok.
Crawling underneath the car making sure I’ve sopped the fuel leak has highlighted yet another problem, my front cross member is dripping with oil from I suppose is the engine. What have I let myself in for.
Are you certain it is oil or could it be diesel leaking from the fuel pump - check the smell? That could be another apparent source of air in the fuel line.

My project car had both a disintegrating (metal canister type early) fuel filter and the diesel pump was leaking as well, which in turn causes all manner of joy with degradation of the coolant pipework at that end of the engine block.
 
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