Dried/cracked PCV repair
Posted: Sat Jan 25, 2014 1:37 am
94 Legacy Wagon, Turbo AWD, 197k mi.
OH what fun I'm having with dried out, hard, cracked PCV/vacuum system!
This adventure started with the newly acquired vehicle not passing emissions (high carbon monoxide, 400 of 200 allowable.)
O2 sensor was looking good in closed loop, but a mechanic recommended replacing it 'because it's lazy'. They recommended replacing the PCV valve due to smoking oil leak in the engine bay. Finally they wanted to replace both cats (saying one in the exhaust manifold under the engine, and second behind the turbo).
So I started replacing the PCV valve, the 'rubber' hose was cracked and broke. So I tried to get it off of the 'F pipe', which also broke. Basically everything rubber is breaking as I chase it down. I had to take the turbo inlet elbow off to access other piping, and it is cracked too!
So I'm getting bulk 1/2", 5/8", 3/4" rubber piping together from the local auto parts. I'm going to need to track down some Y adapters for those sizes. I'll also need to either replace the turbo inlet (I see these are available in Canada?), or cobble something custom with a silicone elbow and the 'coffee cup' mod.
So first let my story be a warning to others - lol.
Second, I'd love some advice on how people have been able to access the vertical vacuum port (PCV port?), on the top of the rear passenger side of the engine, beside the turbo. Images attached below.
Thanks in advance!
P.S. the Turbo to Throttle hose is hard as a rock - I cannot pull it off without damaging it.
OH what fun I'm having with dried out, hard, cracked PCV/vacuum system!
This adventure started with the newly acquired vehicle not passing emissions (high carbon monoxide, 400 of 200 allowable.)
O2 sensor was looking good in closed loop, but a mechanic recommended replacing it 'because it's lazy'. They recommended replacing the PCV valve due to smoking oil leak in the engine bay. Finally they wanted to replace both cats (saying one in the exhaust manifold under the engine, and second behind the turbo).
So I started replacing the PCV valve, the 'rubber' hose was cracked and broke. So I tried to get it off of the 'F pipe', which also broke. Basically everything rubber is breaking as I chase it down. I had to take the turbo inlet elbow off to access other piping, and it is cracked too!
So I'm getting bulk 1/2", 5/8", 3/4" rubber piping together from the local auto parts. I'm going to need to track down some Y adapters for those sizes. I'll also need to either replace the turbo inlet (I see these are available in Canada?), or cobble something custom with a silicone elbow and the 'coffee cup' mod.
So first let my story be a warning to others - lol.
Second, I'd love some advice on how people have been able to access the vertical vacuum port (PCV port?), on the top of the rear passenger side of the engine, beside the turbo. Images attached below.
Thanks in advance!
P.S. the Turbo to Throttle hose is hard as a rock - I cannot pull it off without damaging it.