I just developed something on my 1981 308GTSi that I was wondering if anyone knew about. The car is all original. Still has the Air Pump,everything. Just turned 20K Miles. Has about 3 years and 6K on the last belt service. It will be going in for a 30K, plus anything else it may need in a few months. But,twice now,when I first start it up...the initial "Cold Idle" doesn't kick down. It usually does after a couple of minutes...less when it's Hot out. I had to turn the car off,then restart it and it was fine. I had the Rear deck lid opened,and noticed both times that it happened, that a plug or something that is connected to the left side of the exhaust manifold gets,literally,Red Hot. Thats when I immediately shut the car off. (and this happens,maybe after only a minute or two longer than a "Normal" start.) This hasn't happened all the time. I have started the car several times between incidents with no problem. Any suggestions as to what this problem is,before I just take it in...? Thanks!!!!!!!