I am new to the club. Hope to be able to get a little help with the 77 280Z. Just got the head resurfaced and back together. I think I have some wires crossed on the Thermotime switch and maybe the temp senor. Before I put it back together this time I was getting a lot of extra fuel on the plugs, but hopefully I got it back right. You guys have a great afternoon. Seeya, Rick1946

Ah dude, welcome to the club ! thats whats happening to me. Completly rebuilt my 77 280Z engine and now bad water temp sensor and or mal adjusted TPS switch got her running rich too. Was it running rich befor the head job with same semptoms and spark plug condition?