Black_Black
NAXJA Forum User
- Location
- Colorado
Hi jeepers,
I have an 89' cherokee with a lot of under the hood smoke. It had a bad valve cover gasket for a while, so oil all over everything and the down pipe. It never smoked until I did some work including injectors and plugs now a lot of that is burning off. My theory is I was running rich before and now exhaust temp is higher? It has a relatively new ngk o2 sensor.
Anyways I replaced the cat and muffler and noticed the manifold / downtube gasket was very loose so I tightened that. My engine has always had a turbo whine like sound every so often, but now it's very prominent. It runs great..
Does that sound like a cracked exhaust manifold?
I have an 89' cherokee with a lot of under the hood smoke. It had a bad valve cover gasket for a while, so oil all over everything and the down pipe. It never smoked until I did some work including injectors and plugs now a lot of that is burning off. My theory is I was running rich before and now exhaust temp is higher? It has a relatively new ngk o2 sensor.
Anyways I replaced the cat and muffler and noticed the manifold / downtube gasket was very loose so I tightened that. My engine has always had a turbo whine like sound every so often, but now it's very prominent. It runs great..
Does that sound like a cracked exhaust manifold?