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brianpalmer
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Joined: Apr 20, 2012
Posts: 2

PostPosted: Fri Apr 20, 2012 7:31 pm Reply with quote Back to top

hello.I have owned my a6 for nearly 8 years now i was regularly getting 47mpg(actual) on a run until recently,now i am struggling to get 40mpg.the car is always fully serviced and the pump timing setup.any ideas as to what could be causing this?
 
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MilesB
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Joined: Mar 09, 2012
Posts: 44
Location: Northampton

PostPosted: Fri Apr 20, 2012 10:36 pm Reply with quote Back to top

Could it be blocked fuel filter, blocked CAT, EGR valve problem, binding brakes, split boost hoses/intercooler or flat tyres?


Miles

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1997 A6 C4 Avant 2.5TDi AEL Auto 
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MilesB
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Joined: Mar 09, 2012
Posts: 44
Location: Northampton

PostPosted: Fri Apr 20, 2012 10:37 pm Reply with quote Back to top

The MPG on my AEL auto increased dramatically once the split boost hose was fixed....


Miles

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brianpalmer
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Joined: Apr 20, 2012
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PostPosted: Sat Apr 21, 2012 11:09 am Reply with quote Back to top

MilesB wrote:
Could it be blocked fuel filter, blocked CAT, EGR valve problem, binding brakes, split boost hoses/intercooler or flat tyres?


Miles


hi,thanks for the answer.

fuel filter was changed only a week or so back(it is changed every 6 months or so usually),I had the cat removed a year or so back,egr has been blanked off,tyres are ok.Split hose is a possibility i suppose but the performance hasn't changed and i have had a couple of pipes split in the past and performance loss was significant and i also noticed a lot of black smoke coming out of the back of the car.
 
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AndyS2
Audi Nut



Joined: May 05, 2003
Posts: 84
Location: Sheffield , England

PostPosted: Mon Apr 23, 2012 5:03 pm Reply with quote Back to top

I thought, when I read the thread title, that you were only getting 2.5mpg!

I can't really help with your problem I'm afraid, as I have similar issues, struggleing to get 38mpg out of mine. I'm fairly certain that the pump timing is out though, so that's first on my list to get sorted.

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1991 Audi S2
1997 Audi A6 2.5TDi quattro avant AEL 
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duff_audi
Needs to get out more



Joined: Dec 02, 2007
Posts: 126

PostPosted: Fri Apr 27, 2012 3:19 pm Reply with quote Back to top

I had a binding rear brake that caused this along with a pump timing creeping

Check the temperature of your wheels by touching them with your hand and see if any are hotter than the others

Also check the pump timing

I recently y changed my air-filter and gained about 3mpg , it was caked in crap

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Silver A6 TDI 140bhp SE Avant , S6 8*17" wheels, S4 Black interior , Audi 100 Audi sport steering wheel ,cruise fitted by bladerunner , Dual HID`55w/35w , 396k miles and still trucking 
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daz-the-dogg
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Joined: Jul 26, 2011
Posts: 340
Location: Stevenage

PostPosted: Fri Apr 27, 2012 6:50 pm Reply with quote Back to top

can i add to the above to use the back of your hand, as i once saw a young lad in my section use the front of his hand on an army wagon and burnt the whole palm of his hand

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1994 Audi 80 1.9TDI Avant Auto
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daz-the-dogg
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Joined: Jul 26, 2011
Posts: 340
Location: Stevenage

PostPosted: Fri Apr 27, 2012 6:51 pm Reply with quote Back to top

can i add to the above to use the back of your hand, as i once saw a young lad in my section use the front of his hand on an army wagon and burnt the whole palm of his hand

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1994 Audi 80 1.9TDI Avant Auto
Lambretta's a way of life 
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