A4 (B8 Platform) Discussion Discussion forum for the B8 Audi A4 produced from 2008.5

Difficult to start when warm!

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Old Feb 27, 2021 | 11:02 PM
  #1  
CraigMans's Avatar
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From: Darrington
Default Difficult to start when warm!

Long story but here goes!!

I have an Audi A4 on a 2011 plate. The high pressure fuel pump disintegrated! I took it a local garage and they replaced it. In the process they replaced the lift pump, rail sensor, and timing belt, water pump etc.

I got it back after they told me it would cost £5800 to replace the entire fuel system as this was the only cure to stop it dropping into limp mode. On getting the car back and running it, because I was not going to pay that sort of money on a car which has done 160k miles. I put some fuel treatment in and it has performed better and better as the weeks have rolled on. Only limping every now and then.

The main issue I have is that when the car has been idling in traffic it is now difficult to start. This only happens when the car has been parked for 5 minutes or so after idling. If you start it straight away it will start no problem.

Any ideas or should I just send it to the scrap yard in the sky?

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Old Dec 15, 2021 | 05:33 PM
  #2  
taylorsarkees's Avatar
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Originally Posted by CraigMans
Long story but here goes!!

I have an Audi A4 on a 2011 plate. The high pressure fuel pump disintegrated! I took it a local garage and they replaced it. In the process they replaced the lift pump, rail sensor, and timing belt, water pump etc.

I got it back after they told me it would cost £5800 to replace the entire fuel system as this was the only cure to stop it dropping into limp mode. On getting the car back and running it, because I was not going to pay that sort of money on a car which has done 160k miles. I put some fuel treatment in and it has performed better and better as the weeks have rolled on. Only limping every now and then.

The main issue I have is that when the car has been idling in traffic it is now difficult to start. This only happens when the car has been parked for 5 minutes or so after idling. If you start it straight away it will start no problem.

Any ideas or should I just send it to the scrap yard in the sky?


any solution? My car is doing the same thing
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