I ran across this 2 days ago. The dozer was weak operating at high idle and smoking black. The customer had replaced the turbo charger 4 months ago and the problem never got better. Since they had replaced the turbo, I had a feeling that it was loosing boost pressure from somewhere, just had to find it. I didnt expect this.............
a small hole in the intake manifold.
a small hole in the intake manifold.