Originally Posted by upallnight (Post 1196569)

Since you have multiple misfire with fuel cutoff, goes away once the engine is warm I would say that it is not an ignition misfire but a weak cylinder misfire. A weak cylinder misfire is when the cylinder doesn't produce the same amount of power as the other cylinders. The computer can determine this quite easily by the rotational speed of the crank once the spark plug has fired for that cylinder. All the other cylinders could be rotating the crank at 700 rpm but one could be rotating it at 650 or 630, etc... You will not notice the difference but the computer wil know.

Originally Posted by Jakal702 (Post 1196570)

In that case I should definitely take it to my mechanic. Hopefully it’s not that (sounds expensive😒) the thing is that it’s random cylinders... would they be all be weak then?

Originally Posted by upallnight (Post 1196572)

A weak cylinder could be a cylinder with low compression (expensive fix) or a vacuum leak (lean mixture) could cause a weak cylinder. The fact that it goes away when the engine is warm leads me to believe it's a vacuum leak. Could be a hairline crack that opens up when it is cold (material contract except for water) and closes up (expand when it is hot).

Originally Posted by CapeX5 (Post 1196581)

you have to do a "smoke test" of the intake system. Try to break this down into one thing at a time, systematically. As I said in one of my earlier posts, gas, air, spark. Verify one at a time. Go on Youtube for a description of what a smoke test is