I bought this car few days ago..car had it's service which was just the Oil, Oil filter and also Air filter change by the company who acquired it. they didnt change Diesel filter and cabin filter. So I have decided to change them myself which i did. I bought UFI 2603800 Fuel Filte from eurocarparts and today when i was driving i realise that it was consuming 3time highrer than normal. did i do anything wrong. I have just seen the video and found it easy to do it myself. did i miss anything!

You could have, there is a short dumpy and a longer filter. You did get the right one?

 

also the canister or hoses are not leaking are they?

4 minutes ago, cheezemonkhai said:

You could have, there is a short dumpy and a longer filter. You did get the right one?

 

also the canister or hoses are not leaking are they?

There was only one fuel filter available for my car at eurocarparts.it looked and sized exactly as the one i had.no leaking of trace any where though.

4 hours ago, automass said:

There was only one fuel filter available for my car at eurocarparts.it looked and sized exactly as the one i had.no leaking of trace any where though.

 

There was one filter style with multiple brands. For me the MANN was the wrong one so I picked another brand. UFI is the manufacture of the filter housing on some cars.

 

i would check the seal for leaks and the pipes as if anything consumption improved for me.

 

 

Edited 7 March, 20197 yr by cheezemonkhai

UFI is the brand for my car..i checked the hose, but no leaking..i opened cover of the fuel filter this morning. It stuck tightly with the lid..i couldnt find any problem..but as i am driving i can see the infoteinment and my fuel gaudge that,it is taking numerous amount of fuel..now the mileage is 69.2 and almost 4 bar of the gauge is gone. 

 

Edited 7 March, 20197 yr by automass

I am tempting to put the old filter back which is ufi as well but audi logo in it..guys, am i missing something! New fuel filter at least if it doesnt give me better mpg, it shouldnt give me horrible mpg.

shouldnt i give it a go..or should i buy fuel from the pump and fill the canister with the current one I have? Or any other idea?

I would be tempted to Brim my tank, drive 50 miles or so having zeroed my mileometer and Maxidot then brim again and see the actual miles per gallon, 

or miles per litre used.

When I reopen the canister I saw it wasn't full with fuel. Do I need to fill it with fuel..is it very essential?

If you have no leaks then the only other place for the fuel to go is through the engine.  Diesels run with a lot of excess air so adding extra fuel should give lots more power.  The amount of fuel you are describing would give a noticeable increase in power/torque.  I would suggest the OBC is reading things wrong and the calculations are based on false figures.

Skoffski has a good point in brimming and doing your own measurement.

Is that saying you've driven 75 miles at 8 miles per hour in 9h 42min ???

that was total driving since I refuel. But I would do what Skoffski said. I just need to clearly know, whether I need to fill the canister to the top or the fuel I collected while changing (which I already put in there) is ok.

If there is a seal you did change the seal with the filter?

 

if it’s not full, then it sounds to me that you have introduced an air leak, so you’re drawing in air.

 

i am worried that you’re using loads of fuel, but would ignore the mpg readout until it has been reset.

 

in terms of the pump, technically you’re supposed to use vcds etc to prime the pump.

 

You didn’t let any cruft get on the clean (engine intake) side of the filter did you?

You can prime the filter on VCDS, however, a more simple option to do is just have a jerry can and brim the filter before you put the lid back on.

 

On videos I've seen of it being done, it's been done both ways (vcds and jerry can) and it's both had the same positive outcome.

 

In theory, as well, turning the ignition on and off a few times gets the pumps going.

 

As cheezemonkhai asks above, did you replace the o ring which is on the lid? I'd always replace things like that, as they're only a few quid. Plus, a wipe of diesel around the o ring ensures a snug seal.

18 hours ago, MarkyG82 said:

 

There is no O ring in my case. It comes with the filter..yesterday i have openned it to put back the old one and guess what screws have lost their threats or may be the housing lost their threats..so i couldnt tight couple of screws properly..when i started the engine..there was popped sound and fuel sprankled all over everywhere. It was evening and drizling with wind,i had to go to the garages and shops to find similar screws..finally i managed to get quite similar screw with bolts. and managed to tight them..i am fade up..i will book it with Skoda for full inspection and servicing.I should have done it before..but as i saw air filter new and oil lookes new.. Just matter of changing the fuel filter as last one was changed Jan'18 10k miles ago. 

I think you over tightened the screws.

 

FWIW make sure the fuel spray didn’t get on the cam belt 

3 hours ago, cheezemonkhai said:

I think you over tightened the screws.

 

FWIW make sure the fuel spray didn’t get on the cam belt 

 

Thanks to bring this to attention. I couldn't clearly look at cambelt though as it is far inside and view is restricted by engine components. but if it happened to get fuel in there what should I do? any advice would be appreciated. though I booked the car with Skoda and they will (I believe) look into cambelt as it is major service+mot.

 

 

Dream on.

 

They would have or should have changed the fuel filter if you were paying for a Major Service.

Remember and ask, 'are you removing the wheels'.

Edited 8 March, 20197 yr by Skoffski

Major service certainly does not include the belt.

 

The reason I said check, is because diesel degrades rubber over time, which wouldn’t be great for a cam belt.

Search the forum, especially the MkII pages.

 

This complaint pops up regularly after a fuel filter change.

 

Your fuel consumption hasn't changed. The parameters the car uses to calculate it have. The new filter is freer flowing and you'll have introduced a small amount of air into the system. Stop opening the fuel filter housing lid, you're just making it worse.

 

Never rely on the data in the infotainment system, it's a guide only. As mentioned above, the only way to accurately calculate fuel consumption is manually after filling the tank.

 

Give it a few weeks and everything will settle back down to normal.

I do not rely on infoteinment consumption data at all..in actual reality this data is even better than what is really consumed. But what would you think when you would see that your fuel gaudge has got 4.25 bars gone when it was just 89miles on the trip computer. 

Anyway, i am not gonna play with fuel filter anymore. Thanks for the advice.

On 07/03/2019 at 13:36, MarkyG82 said:

 

 

Edited 9 March, 20197 yr by automass

In adition, I can see in my infoteinment that The fuel consumptuon Since Start starts from 17mpg where as my previous Octavia used to start from 27mpg. So its very hard to get it reached to 63mpg whereas it was easy for my previous car.

I UNDERSTAND THAT INFOTEINMENT IS NOT ALWAYS ACCURATE.

but i can see my Fuel gaudge is going down drastically. 

So definitely its consuming more fuel than usual since i changed the fuel filter. Point to be noted. I bought this filter from ECP and it was UFI. It is exactly as same as the old one i had in the car.

 

Could the old car actually drive 63 miles after brimming the tank and then only need 4.546 litres to brim it again?

If your fuel gauge is going down that fast you have a leak. I can't see how a fuel filter change would ever increase fuel consumption.

It wouldn't. I suspect it's the placebo effect.

 

Sometimes the flow and return pipes can loosen on the lid of the fuel filter housing, resulting in a leak, but this would be easy to see.

 

The filter may now be freer flowing, especially if the old one was clogged, but it's the fuel pump that regulates how much fuel is used, not the filter.

I've just reread the opening post.

 

The car is new to the OP, so we've nothing to benchmark the fuel consumption against, it's likely been the same since new!

 

Comparing it to your old car isn't Apple's to Apple's.