Hello, I have a basic 2018 volkswagen golf TSI 1.8T FWD 6 speed auto 60,000 miles buyed used at delearship on it. Done some maintaince ect. To my trust worthy mechanique. Spark plugs brand new were changed been over 3 months. Was driving on highway car started shaking and EPC light came on and the check engine came on. I stoped on emergency lane turned off, car waited 10m turned back on gone. But when I got home it scaned P0304 and P0302. Wich says Cylinder 2 and 4 misfire detected. The car runs fine now no check engine light. Seems to only happen if I accelerate to go 30mph to 60 mph quicker. Since than been driving more calm to avoid this. Brought to delership since I got waranty they were lost they told me it was loose coil pack wich I did not belive. What could the problem be?
That new of a car features coil-on-plug technology, I'm pretty sure. Start with the simplest thing and properly torque down your spark plugs. My '79 Pontiac started idling a little funky around 3 months after I changed spark plugs, and a couple had worked loose.
If that doesn't fix it, do a compression test and leakdown test.
