Engine noise..sorta

[Der_Vier]

As of recently it sounds liek my engine is puttering (for lack of a better word) after it revs up. Looked under the hood while it was running and pulled on the throttle and it sounds like a mixture of a putter and the noise a leaking air intake hose makes...not sure if i am hearing things, as it has always run kinda loud. It may also be rust aruond the Cat converter.

 

Anyone have an idea what it may be? Changed oil about a month ago and it was fine, no clumps or chips of anything.

 

IV

[skulptr]

i had something similar to that, and it was one of the bolts missing from the cat on the drivers side. 2 or 3 of the bolts actually go all the way into the insides of the cats. so if its missing, then you have an exhaust leak. it sounded like a putter.

 

plus check your exhaust manifolds, mine on the drivers side was cracked, and eventually snapped off, twice. and check all your gaskets. your local exhaust shop can use their little stethescope to find a leak too.