My 2013 Audi A3 is misfiring. Taken it to the mechanic but they don't seem to know what the issue is. initial diagnosis shows an issue with Cylinder 2. 

On ideal it is seems ok. when starting to accelerate, it runs rough and starts to backfire. This problem  doesn't occur when vehicle is warm but happens when cold.

 

Here are the current repairs that have been done but still no results

Parts changed

Intake manifold

high pressure fuel injector 

Camshaft Adjuster Magnet

Gasket

Low pressure fuel injector 

spark plugs

ignition coil

throttle body 

ECU

 

Has anyone experenced this issue ,  what steps did you take to fix them ?.  

Dan.

It would help if you gave some details of the engine such as its size and fuel.

12 hours ago, Dan_34 said:

My 2013 Audi A3 is misfiring. Taken it to the mechanic but they don't seem to know what the issue is. initial diagnosis shows an issue with Cylinder 2. 

On ideal it is seems ok. when starting to accelerate, it runs rough and starts to backfire. This problem  doesn't occur when vehicle is warm but happens when cold.

 

Here are the current repairs that have been done but still no results

Parts changed

Intake manifold

high pressure fuel injector 

Camshaft Adjuster Magnet

Gasket

Low pressure fuel injector 

spark plugs

ignition coil

throttle body 

ECU

 

Has anyone experenced this issue ,  what steps did you take to fix them ?.  

Hi have they scanned the car for fault codes, if so what were they, confused by the list, high pressure and low pressure injectors not heard of them.

Steve.