So I just got this car a couple days ago.
1994 cx hatch, z6 swapped, iacv issue starting to arise, I/h/e, runs perfect. Under heavy load to w.o.t it begins to softly misfire around 4500 and then around 5500 it almost falls flat on it's face and run on 3 cylinders all the way up to redline.

 

Codes?

Ignition system tune up?

 

in addition to above...

compression test?

 

Well, it now won't stay running. It'll start for a few seconds and then shut off. Replaced the main relay and nothing changed. Dipahit before me put autolites in it... plugs, wires, cap, rotor, and ignition coil look fairly new. There's no oil inside the distributor. All fuses are good..... Well, some of the bigger fuses in the engine bay fuse box look a little corroded.
no it just cranks and cranks. Sometimes a little a faster than normal.

 

dump gas and put in fresh gas?

 

let me guess...it ran perfectly fine when you test drove it? Hopefully, you did take at least15 minutes to look it over and drive it prior to buying it.

 

reminds me of the guy who bought my b20 95 integra. I let him take it up to redline, take the turns and he was ready to pay. Just didn't meet my price. Sucks to be him.