I own a Skoda Laura 1.8 TSI. It is a 2010 model and I have enjoyed every bit of the ownership experience.

Recently I had noticed my vehicle misfiring on acceleration. Also it took about 10-12 seconds for engine to start up on ignition.

1. I immediately got the spark plugs and ignition coils replaced. I got NGK Iridium plugs compatible with Laura and ECS tuning ignition coil. With this change the engine now performs normally there is absolutely no misfire whatsoever.

2. The engine startup time though was still long. I decided to use Liqui Moly Fuel injector clean up but it doesn't seem to help.

Any idea what else can I try before investing on new injectors? The problem is only a delayed start. On the move the car performs well. The car is in stock form.