Wont start. Fuel pump/relay

We keep banging on about how air tight the filter and its drain need to be and in my experience about 90% are not. Either bodging the broken plastic screw, bodging some form of replacement screw or old or no O ring seal(s).

I always lightly lubricate the filter seals with silicone grease and never over torque them.
 
audifan said:
We keep banging on about how air tight the filter and its drain need to be and in my experience about 90% are not. Either bodging the broken plastic screw, bodging some form of replacement screw or old or no O ring seal(s).

I always lightly lubricate the filter seals with silicone grease and never over torque them.
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Yes I totally agree. 90% plus of the air leaks are down the filter assembly
Whilst I understand why Audi changed the filter design the earlier aluminium canister filter had far less to go wrong with it


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Yes the canister type did appear better, although now if you damage the "T" fitting on the top of the filter ( thermal bypass ) you can not obtain the correct one for the A2. And swapping a car between the two filter types is not straight forward.
 
audifan said:
@johnyfartbox Does this mean you only have one O ring fitted??
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Sorry Graham, I've only just seen your question.
The set up previous and this was only yesterday morning, was the bleed screw had one O ring and that was in the Groove that you can see in pauls photo of his replacement one, ive since replaced that with an aluminium one that I've had for ages.
I took off the O ring from the plastic one in the groove and put it into the ali one but I don't have a small one that I assume goes onto the threaded part.
I think I can see what is coming next.
 
The smaller O ring is what seals the bleed function of the drain screw and the larger one the screw into the cover. You are probably quicker just buying another filter that comes with the 3 O rings. Remove the drain plug, fit the seals and see what happens from there.
 
audifan said:
The smaller O ring is what seals the bleed function of the drain screw and the larger one the screw into the cover. You are probably quicker just buying another filter that comes with the 3 O rings. Remove the drain plug, fit the seals and see what happens from there.
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Buy a Mann filter available from euro car parts as that brand comes with the o rings


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johnyfartbox said:
I'll pick one up at euro tomorrow, they are only down the road.
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If you recently changed the filter just use the o rings and put the filter into stock for the next time it needs changed There is no need to change the oil rings every time the filter is changed


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