Engine Mechanical problem
1977 Porsche 924 4 cyl Two Wheel Drive Manual 80000 miles
I am having cold start problems. I have already checked my thermo time switch and cold start valve and they are working. I think my auxiliary air regulator is the problem. I was told that it should be open when its cold, but it only opens about 5% of the way. Does that mean that its ok or do I need a new part?