https://www.performancetrucks.net/fo...d.php?t=471128

I made a post a few months ago and got no responses. I replaced the TPS and nothing changed except it shifting hard. I stopped driving the truck until the holidays were over but I'm looking into again now. It's still doing the same things minus the hard shifting.

I took a look at the throttle body and took it off to clean it. When I did I noticed the intake has a bunch of oil in it. So I'm assuming that I probably have the intake leak again. I'm not losing water this time but it's still hiccuping at low idle.

I've done some searching and not finding much in the way of stickies or info on the gasket replacement. Can anyone point me in that direction?

 

before you start tearing into things... realize that oil is coming from your PCV valve. that little bastard valve is responsible for all that oil in the lower intake. when i took mine off to put a new cam in, there was lots of goo and oil and carbon all over. after soaking and scrubbing in straight purple power it was cleaner than new. thing was so clean look like it was just cast. but yeah. how much oil we talking? cuz you know it could be that pcv valve sticking open. blow in it. it should feel kinda restricted but easily flowingish. then try to suck air through it. you should feel/hear the stopper inside it when you suck or push air through one side. its a start to find the oil issue.

 

If you have to replace the intake gaskets, make sure you use the Fel Pro metal clad HD gaskets.

The plastic gaskets will fail again, and you'll be doing it all over again.

Oil in the intake is normal from the PCV system like cams had said, BUT...it shouldn't be creeping up past the throttle body. If you have that much oil, you may have either bad gaskets, or something else mechanically wrong (clogged air filter, blowby, etc)