Wont start 1st time, cylinder misfire
 

Hello

I'm having an issue with my 2017 A3. I was previously gettin the code P2188 (System too rich at idle) along with P0900 (Random/multiple cylinder misfire detected), P0302 and P0303 (Cylinder 2 & 3 misfire). Looking at this issue online, it seemed the high pressure fuel pump could be the culprit so I replaced that today along with oil change and filter.

Started up, drove 10 minutes and parked, everything ran fine and no codes. Tried starting up 10 min later and it wouldn't, had to try again then it started. Drove for a minute, came to a stop and the car died. Took a couple starts then it idled fine. Drove for about 20 minutes and it wasn't doing it again.

Now every time I start, it takes 2 to 3 start attempts before it starts. The P2188 code went away but I'm now getting the codes P0300 (Random/multiple cylinder misfire detected) and P0303 & P0302 (Cylinder 3 & 2 misfire, respectively).

I'm thinking changing the ignition coils and plugs next but was hoping to hear you alls opinion on this issue. Thanks!