CarTalk.com Blogs Car Info Our Show Deals Mechanics Files Vehicle Donation

Oil cap constantly vibrates loose on 96 Saturn

I’ve tried replacing it, and while it fits in there nice and snug, within 10-20 minutes it vibrates itself loose again and I have smoke coming out from the hood from the oil spilling out onto the engine. Did something in/on the threads break? Is there some easily-removable caulk I can fasten the oil cap in with? (so that when I need to fill it with oil I can still get to it, natch)

Where does it connect to?? What I mean…is it a filler tube? Or just a hole cut into a valve cover?

What might be happening is the area that holds the cap in place might have a crack/fracture. While it may seem tight…it in actually may not be.

I can’t think of anything else without actually seeing it.

Maybe you need a new cap. The part humber is 710.

http://imgur.com/gallery/gjrvh

I know. It’s an old joke for most.

Its a threaded in cap, best bet is to just replace it. The valve cover is aluminum and not likely to crack.