280Z running rough after warming up
 

Started off changing the manifold gasket and ended up breaking the ears on the stock exhaust manifold so I ordered a MSA header and exhaust. While I was waiting on those I stripped down the intake manifold and had it hot tanked and painted it. I also deleted the EGR and the evap canister while I was at it. Got everything back together today and started it up. It ran great for a couple minutes then all of a sudden started idling rough and missing. It's burning rich and smoking like a chimney.

Here's a few things I'm not sure of.
1) After deleting the evap canister, I ran the line from the distributor to the canister back to the manifold instead.
2)After deleting the EGR. I capped off the line from the bottom of the throttle body and blocked off the EGR ports on the manifold
3)I removed the TPS when removing the intake manifold. After putting it back on does it have to be reset?

Can anybody confirm the vacuum setup I have is right or screwed up? And does anyone have any suggestions?

Thanks

I pulled the brand new plugs earlier and they're nasty. All were caked up and two of them had unburnt fuel so I know they weren't firing. How could they have gotten this way in about five minutes of running? The only thing I can think of is maybe the two weeks it sat with the manifolds off it gathered some moisture or something, also some pb blaster got down in the middle two intake ports trying to remove a broken exhaust stud. Could this have caused the nastiness and fouled some plugs when starting?

Can you post some pics of you engine bay / intake manifold?

Also, make sure your coolant temp sensor (square plug sensor in thermostat housing) is fully connected. The engine will foul out (flood) really quick if that's disconnected).

That's what I was just reading. Symptoms of a coolant temp sensor sounds like mine word for word. But from what I can remember I never unplugged It. It's actually stuck at a friends house a state away. I'm headed back over there today, and I'll get some pics up.