missing/rough running round 2

[8cam]

Replacing the coils, wires and plugs cured my last issue but it's happened again only different. It's still my daily driver and has been running flawlessly since I did the coil fix. But I had two issues occur in the last couple days.

Wednesday I drove it to work just fine. When I got in the car to go home, I started it and idled for a minute, and it just stopped. No chugging, just quit, first time this has ever happened. Started right back up and drove home fine.

Then Thursday I drove to work again, just fine. Time to go home and first start didn't catch, and I thought I had just let it go too soon. Second start and it was definitely running rough. I drove it a couple miles and dropped off a colleague, then headed home, still not running right. The difference this time is it still pulled all the way to redline, just like only 7 cylinders were firing.

About halfway home it started running REALLY badly, had to work the throttle just to keep it sorta running, like half the cylinders were gone, or an old carburetor in need of a rebuild. I pulled off the road and checked under the hood, nothing looked out of place, hose on the MAP sensor right where it should be. Started it back up and it ran PERFECTLY. WTF? I mean it was on it's last breath just a few minutes ago.

So I continued driving home and it ran just like it should, pulled hard to redline, just perfect. Right before I pulled in the driveway it started the slight stumble again. This morning I had to move it to get my other car out. Started up and ran perfect again. Again WTF?

I'll start pulling plugs today, also need to check fuel pressure. I'm guessing fuel problem, maybe the filter is clogged.