Hitting a wall at 4K

If your spark plug gap is too wide for your ignition it'll do the same thing.

They were at .028 and I bumped them up to about .036.

I had the same thing happen to my car. It was the fule pump. Car sat for to long and all the rubber dried out and went bad on me.

Good luck

Ugh, I hope not, I finally got it to stop leaking from the fittings. :P