The past couple weeks or so, I've noticed this little miss in low RPMs (less than 2200), slow acceleration, and while cruising freeway or streets. Every once in a while at idle, there'll be a little blip in RPMs. Under moderate or high load, it seems to run completely fine. Can't really notice any power loss or anything. Also, didn't matter if the engine was cold or warm.
Well today I noticed that it got a little worse on the way to the gym. On the way back home it got a little worse. When I got a couple blocks from my house, it stumbled pretty hard and threw a yellow check engine light. Restarted the car and got it home.
Well, I came inside to do a little research and couldn't really find anything "exactly" like my problem. So I went back out to drive the car to make sure I knew how to exactly describe the conditions to make this post. Well, it didn't misfire once... Drove it around for 15min or so in the neighborhood to make sure it was all up to temp and whatnot. Tried all RPMs, different accelerations, and nothing.
Car is at just over 135k miles. I've had the car since 88k. Only thing that's been changed is the spark plugs and that was around 8k miles ago.
I do have a valve cover leak. I was trying to clean everything up and be really careful about getting anything on the plugs while installing them, but there is a chance something could have gotten on them and fouled out. That's one thing I saw while researching that could have happened.
Any help on what to look at would be great. Thanks in advance!
