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Fix fuel leak on a 2005 2.4 ltr Audi

After approx 30 minutes driving the car starts to miss,adventually it will stop altogether,leaking fuel on the right side underneath between front and back door what's wrong?

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There is a fuel filter in that area check that area for leaks
could be a bad fuel hose or filter.

Posted on Nov 23, 2013

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Posted on Jan 02, 2017

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SOURCE: Have a leak under passenger side dash when it rains. I think the door under the cabin air filter isnt closing is it an easy fix

Having just repaired this problem in a 1998 Buick Regal, I can tell you that fixing the water leak is actually quite easy. It took me quite a while to track down the source of water, but I have discovered that it comes through the cabin air filter. There is a seal on the passenger side of the cowl (A two piece unit, black plastic, against the windshield) that seals it to the windshield to prevent water infiltration. It is very small and somewhat hard to miss. I took the cowl off to change the filter when I discovered this.

You can make a diverter to go over the air filter under the cowl, or even easier is to use some clear RTV silicone (avalible at any automotive and most hardware stores) and put a good bead on the old seal. When you re-install the plastic cowl, be carefull where it goes against the windshield to make sure you don't "smear" the silicone. After you re-install the plastic retainer hardware, smooth out the bead and clean up the excess silicone(a wet finger and some old cardboard works great). Let it dry and clean up the water in the passenger compartment.

Cleaning up the water is the hard part. Removing the plastic trim around the door (if you grasp the trip peices firmly they just pull up off some metal clips,but they can be quite stubborn) you will notice the carpet just pulls up. At the bottom front corner of the front doors the carpet has a plastic hook that is around one of the trim clips. Lift it off that and the rest of the carpet towards the firewall just pulls up. If it has been a long problem, your carpet may be moldy. Also, the carpet edges and some of the more hidden panel clips are very sharp and may cut you while you are poking around, so be carefull.

Since the water entered through the air filter and right over the fan, you will at minimum want to replace the filter. I had mold and moss growing on mine. My fan also squeels and chirps now, so I know it got wet. Not much to do about that but replace it or carefully lubricate the motor.

In your question you mentioned a door underneath the filter not closing. On my '98 Buick Regal there is no door or valve of any sort. The filter sits right above the fan blades. It is the cowel's job to prevent water from entering this part of the vehicle. I hope this helps you fix your problem.

Posted on Jun 22, 2009

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SOURCE: 2005 Audi A4 1.8T QT, cylinder 4 misfire p0304

I too have the same problem on my 2005 1.8t B6. I noticed a hole in the breather hose coming off the valve cover that runs to another port under the intake manifold. I have the hoses on order and should be here on Wednesday. I'll post again if that fixes my problem.

Posted on Oct 12, 2009

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Code P0455


Ford error code P0455
- Missing or loose fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- EVAP canister or fuel tank leaks
- EVAP system hose leaking
- Fuel tank leaking
The P0455 it's a very common code, because the code is set if the gas cap is loose or missing. Start by tighten the gas cap and clearing the code. In most cases the code can be clear by disconnecting the car battery for about 30 minutes.
http://engine-codes.com/p0455_ford.html
http://www.stangnet.com/images/stories/docs/sn95_TSBs/03-20-03.pdf

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When driving my Audi for more than 30 minutes it will start to miss and finally stop it will then leak fuel underneath ibetween the right front and rear door


I would say you have a small hole in the fuel line and it is sucking air which will make it miss and then completely stop hope this helps

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1994 gmc 2500 diesel 6.5 sarts and stalls. When cold it starts good and drives allways on highway. When stopped for 15 minutes or 30 minutes, it will start but stalls after a few seconds. It will start...


You apparently have a leak in your fuel system that allows air in to the fuel system but doesn't leak fuel out enough to be that noticeable. I found this to be true on my 6.2 diesel, so I put light air pressure to the end of a tank vent line and turned on the little compressor. I found the leak spot right away, made the line repair, and have had no more problems with stalling or over-revving.

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Code 0455 on a 2004 grand prix


P0455 - Evaporative Emission Control (fuel vapor control) System Leak Detected Gross Leak

Possible causes- Missing or loose fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- EVAP canister or fuel tank leaks
- EVAP system hose leaking
- Fuel tank leaking Tech notes The P0455 it's a very common code, because the code is set if the gas cap is loose or missing. Start by tighten the gas cap and clearing the code. In most cases the code can be clear by disconnecting the car battery for about 30 minutes.

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Why does my 2005 impala leak dexcool like crazy, which throws my heat off.


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Vehicle has engine miss on hot soak conditions, clears up after approx 5 minuts and comes back after shut off and restart


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What does the code p0457 for a 2005 ford sport trac mean?


check for a loose fuel cap or a rust hole at the top of the filler neck. causing a loss of pressure/vacuum.

P0457 - EVAP Control System Leak Detected (Fuel Filler Cap Loose/Off) A fuel tank pressure change greater than a minus (-) 7 inches of H 2 0 in 30 seconds has occurred after refueling; or there is excessive purge (fuel vapor) flow greater than 0.06 pounds per minute.
  • Fuel filler cap not installed on refueling (storing continuous memory DTC) and "check Fuel Cap" light may also be illuminated.
  • Fuel filler cap missing, loose or cross-threaded.
Check for missing fuel filler cap or integrity of the cap. If OK, clear continuous memory DTCs and re-initiate EVAP Emission Running Loss Monitor Drive Cycle.

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1 Answer

2005 Audi A4 1.8T QT, cylinder 4 misfire p0304


I too have the same problem on my 2005 1.8t B6. I noticed a hole in the breather hose coming off the valve cover that runs to another port under the intake manifold. I have the hoses on order and should be here on Wednesday. I'll post again if that fixes my problem.

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