Tiguan 2012 manual TSI occasional misfire

[jewfish1010]

The Berrymans B12 product is about $35 for a 444ml bottle, so its not cheap to buy here in Australia - but its heavily marked up because its a low volume product for Australia plus you are paying the freight cost to bring it in from USA. In the USA its about $5 a bottle. Im sure a carby cleaner product would do the same job, and much cheaper at about $50 for 5L.

Throttle Body Carburettor Cleaner Liquid Sydney Solvents 5 Litre | Sydney Solvents

Given that getting time to work on her car is difficult and the fact that I was able to get my hands on B12, I just went with that, but I agree that carb cleaner would probably work also.

I didn't follow the video exactly, here's what I did if anyone is interested:

I didn't bother rotating the engine between B12 topups, I just put the plugs back in to stop evap.

I also purchased this Engine Air Valve Holder Pressure Pipe for LS Engine Stem Seal Removal Holder | eBay to blow compressed air into cylinder 2 at TDC, but I was time limited with the car, so only did this cylinder and not the others - but this probably isn't necessary.

I found this KIA tsb: https://static.nhtsa.gov/odi/tsbs/20...09438-0001.pdf and thought it was interesting.

I blew out the cylinders with compressed air after the berrymans was complete (incase any loose chunks) and put a teaspoon of engine oil in each cylinder before starting the first time (to help with compression) then warmed the engine for 20 mins, then put in a can of liquimoly engine flush (thought being: let's tackle this from above and below), then ran that for 20 mins (idle only), then replaced the oil with the cheapest oil I could find to flush, then ran that for another 20 mins (idle again).

Then drained that and put in new 5w-30. The flush oil came out very black.

I may repeat the procedure again, but will see how the oil usage tracks in the next few months.