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Hi guys
Hoping someone can help me with my misfire!
It's misfiring on 4 cylinders 1,2,5,6, iv had new plugs, upgraded my coil packs to APR had injectors tested and cleaned and yet still misfiring!? There is no fault code coming up for the crank position sensor which iv read up on which can cause a bad misfire. The battery is fine which can also cause a misfire also, soooo I'm really baffled and getting very annoyed now haha can someone please help with any ideas!? I'm at a loss now.
Thanks guys in advance.
 

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Tell us about the car, year and model and engine and stuff as otherwise how can we help??????
 
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With the 4.2 V8 FSI, it can or does suffer from carbon build up which does give misfires. Have you done a compression test?

If you have changed plugs and coils, then my money is on carbon on the intake.
 
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