Question about 1999 Audi A6

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Change fuel filter on a 01 a6 and car wont start

I change the fuel filter on 01 a6 and the car wont start

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  • yadayada
    yadayada May 11, 2010

    push your foot to the floor and keep cranking the engine.


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Loosen the line on the filter going to the engine. It maybe has an air lock in the line. Cracking it open will releive the air & then the gas will flow out.

Posted on May 22, 2009

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I changed my fuel filters on my 6.4 l f150 2008 now won't start .I cycled engine but smelled a faint smell and saw light smoke from under hood .charge batt.still won't spin .did started go out too

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Jan 25, 2016 | Cars & Trucks

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Hi i have a 1998 audi a6 quattro with starting problem. Starter is turning engine but just wont fire up. Was Idling rough for couple weeks prior to non start but only when warmed up

Good afternoon Michael

The good news is that you have power and your starter is working. If you can't get it started, and had rough idle before that, there are a couple of high likelihood directions to go, so lets start with the least painful.

For proper ignition, you need three things - air, spark, and fuel. If you get the wrong mix, rough running or none. Since you went from running rough to not turning over, you are likely being choked off from one of the vital three (An engaging starter is also needed, but it sounds like you have that)

Not enough air would most likely be a dirty or clogged air filter. There are lots of Youtube videos on how to access and change the filter, such as ( How to change engine air filter on Audi A6 C6 4F 2 0 tdi ). I don't know if it's exactly the same on model, but it's likely pretty close. An auto parts store will be able to guide you to the specific replacement filter if it turns out to be in need of replacement. If you're stranded and not near an auto parts store, you can at least examine the filter and gently bang it out against a solid surface to dislodge overt dust bunnies (try not to breathe any of this, do it outside if you take this route). Also take a look at what's up with the filter. If it's just dust, it may have been overdue for replacement. Oil or other viscous liquid could be signs of more serious problems like an oil leak.

Lack of fuel would come from an old, clogged fuel filter, or clogged fuel injectors. Similarly, videos like this (
Fuel Filter Replacement Audi A6 ) can guide you on the filter, and (
How to Change an A6 Injector eHow ) or the like can guide you on fuel injectors. Try the filter first, less pain. Then if you can get it started, get a bottle of fuel injector cleaner, add it to fuel tank while topping off your fuel with fresh new fuel (in case you got some bad gas), and see if performance picks up over then next 50 miles or so.

Finally, lack of spark. When is the last time the spark plugs were replaced? Worn, corroded or fouled plugs will give you dismal performance. See (
How to change your Audi A4 A6 or A8 Spark plugs and Coils ) and similar for how to on that. eBay is a good place to shop for the plugs, at least for lower mark-up. The procedures will also let you examine the electrical connections for wear. There are also usually seals around the coil packs to keep water splash out of the engine. Make sure the seals aren't all turned to crumbly black gunk (this'd be a sign to replace the coils, or at leas the gaskets.

There are plenty of other things that could be the issue, but with the slow decline into rough running, the odds are pretty good that something in the above will get you running.

Good Luck. If this is helpful, clicking it as helpful will be appreciated.


Nov 17, 2015 | Audi Cars & Trucks

2 Answers

Hoe do I fix high fuel consumption in my car?

IN order to improve fuel consumption you must make the engine run more efficiently. here are the most important ways.
typical maintenance. (check the manual)

1. check air in tires
2. oil and oil filter change
3. spark plugs change (TUNE UP)
4. air filter change

you personally can do most of these things. go to local walmart and get most of these items. very easy.

good luck.

Dec 19, 2014 | 2000 Audi A6

1 Answer

Audi a6 start

Check your starter first.

Apr 03, 2014 | 2001 Audi A6

1 Answer

1999 audi a6 shakes, in ocations violently. Raw fuel smell. Loss of power. Burnt oil smell. idles poorly

If you had the ecu read it would probably say egr code. also a number of other codes to do with injectors and co2 sensor. you need to clean out the egr and clean out the air vent pipe from the sump to the top. also clean out the idle valve on the in take. also the breather pipes. you may even need to change the air filter. and when was the fuel filter changed. an oil change a filter change would not go a miss if it has not been done in awhile. routing maintenance will stop this happening again.

Feb 07, 2014 | Cars & Trucks

1 Answer

Fuel filter how can i change fuel filter

For fuel related problem,the help links are provided below.
Click the link below to go through its procedure:----

How to relieve fuel pressure?
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Replacing Fuel Charging Assembly on Car?
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Car will not take fuel into the fuel tank?
PGM-FI Main Relay location?
How to Relieve Fuel System Pressure on Car Models?
How to Replace a Fuel Injector
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How to Replace a Fuel Pump?
How to change fuel injector on gmc ?
Time to replace Fuel pump?
Emergency fuel shut switch location?
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Car wont start when cold?
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Adding performance chip to increase Fuel mileage MPG?
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This will help.

Feb 01, 2012 | 1988 Ford Tempo

1 Answer

I have a 1999 Audi A6 quattro, have just changed original fuel

You have to bleed the system, most likely air, or you blew the fuel pump fuse !

Aug 12, 2009 | 1999 Audi A6

1 Answer

1997 audi a6 2.5tdi wont start if left for over 2 hours

hi, check for air geting in to the fuel line... the incolor fuel pipe imediately after the fuel filter (if u see air bubles means the air getting some how...vaseline is good to cover all the joints, i've dun it last spring and is good so far) ...if is not that u should change the air mass sensor (common problem with tdi's)...i've had same ok

Jan 21, 2009 | 1997 Audi A6

2 Answers

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Jan 02, 2009 | 1999 Audi A6

1 Answer

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Dec 20, 2008 | 1999 Audi A6

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