Mechanic Q: My '83 Nissan P/U (2.0) has valve ping after eng reaches?
My '83 Nissan P/U (2.0) has valve ping after eng reaches operating temp. I've changed timing chain, EGR valve, adjusted timing. Engine runs rich but I can't see any carb adjustments. I have 110,000 miles and truck is in EXCELLENT condition. Can you give me the likely cause and remedy?