ruidaponte

Hi there, Currently, I get the following error codes on my Pathy: P0325, P0300, P0141, P0171 and P0174. I have already looked around over some topics and I'm trying to start with the cheapest: Air intake leaks. Today I connected the smoke machine to the air intake hose and there are a few leaks. My question is about EGR Control Valve: Is it normal for the smoke also comes out of it when injected through the air intake hose or may it be a leak? Many thanks