I recently tuned up my 95 F150, 4.9ltr. I did all the standard changes. However, for some reason now I have an exhaust leak in the cab with the vent on. I never had this before the tune up, but now at idle I have the exhaust smell in the cab! Any advice? Did I (rookie) possibly bump something under the hood? I had the fuel filter replaced as well and still the smell. I have gone back and checked everything I did, but nothing loose or moved, etc. Appreciate ANY feedback from the experts! Thank you!!

 

Hi Jofford, firstly do you hear an exhaust leak? If so you might be able to track it down. If not then you might want to have a look at the manifold to exhaust pipe connections. I'm not sure if there is an air pipe running at the rear of that engine but if so they are notorious for leaks and smells.

 

I forgot to mention that you might have an oil leak that is burning off from the manifold or block and may smell like an exhaust leak.