Should the nipple on the valve cover is just for gases to be released and should have vacuum to it correct. Asking as in if it should then maybe it’s clogged or dirty.

 

Should be pressure out of the engine vacuum into throttle body. A leak anywhere on any rubber can cause it. The goose neck gets cracks in it at the plastic elbow.

 

Yeah but should anything blow out of that nipple on valve cover when giving it gas? I will grab some throttlebody cleaner and spray around to look for a leak not obvious.

 

Sometimes the hose gets oil sucked into it , I removed the valve cover and cleaned it inside and out.



This hose, sometimes the throttle body end , that plastic round piece gets damaged. Note how the part of the hose parallel to the valve cover is turned up so oil flows back into the valve cover.

I did this to my 2.2 in an effort to keep oil from getting vacuumed out of the valve cover. It didn’t really work , so I recovered the valve cover and cleaned it throughly.

 

That plastic elbow has never been messed with except us looking at it yesterday and it seemed fine. I blow through it and air came out easy. Should the hose be stiff or soft coming off valve cover? It wasn’t soft to collapse by any means but was hard.

None of the wire harness is messed up all tight and still wrapped with wire loom from factory. Don’t have any critter issues.

 

Also no oil was laying or stained on throttlebody mouth or blade.

 

I am talking about cracks in the rubber air horn where the elbow connects. Not the elbow itself.
The air horn must be tightly sealed onto the TB. The gasket for the MAF must seal. The connector to the MAF must be seated and intact.
Every time the air filter gets changed the MAF connector and air horn can be damaged or not plugged in right. Since the code comes and goes when manipulating the hose doesn't it seem likely that a crack in the rubber opens and closes? Or, a tube isn't sealed properly.

 

Yeah I gotcha now. Thanks I’ll let ya know what I found out.

 

That hose was soft 11 years ago.
Not so much now.

 

Okay was just wondered if that was a possible issue somehow.