Valve Cover Vent

AlexO · Feb 26th, 2019, 11:28

Chaps,

In my quest to stop losing oil I've ticked off all the leaks apart from the rear of the cam shaft blowing a fine mist which condenses on the firewall/block and drips. I have all the seals in there and the PCV is clearer than it has been (but could probably do with an overhaul, I'm reluctant to take the intake apart to do it though) but I'm still getting positive valve cover pressure from blow-by. Has anyone found a workable solution to this problem before I delve in to the world of vents, hoses and catch-cans? Any advice appreciated, car details in signature.

Thanks,

Alex

AllHailKingVolvo · Mar 3rd, 2019, 10:33

In my experience, the only solution is to clean or replace the PCV and flame trap, and possibly rear cam seal if oil is still blowing past it after the PCV overhaul.

With the right wiggling and persuasion, I can remove and refit the PCV on my B200Fs without removing the intake manifold...bit of a PITA but it will come out.

Feb 26th, 2019, 11:28	#1
AlexO Senior Member Last Online: Jan 5th, 2024 11:50 Join Date: Sep 2015 Location: Portsmouth	Valve Cover Vent Chaps, In my quest to stop losing oil I've ticked off all the leaks apart from the rear of the cam shaft blowing a fine mist which condenses on the firewall/block and drips. I have all the seals in there and the PCV is clearer than it has been (but could probably do with an overhaul, I'm reluctant to take the intake apart to do it though) but I'm still getting positive valve cover pressure from blow-by. Has anyone found a workable solution to this problem before I delve in to the world of vents, hoses and catch-cans? Any advice appreciated, car details in signature. Thanks, Alex __________________ 2008 V50 2.0D R-Design @ 175K Previously 1992 Volvo 240 SE Estate B230F/M47 (was AW70) @ 200K (I wish I could've kept him)

Mar 3rd, 2019, 10:33	#2
AllHailKingVolvo Ye olde Volvii galore! Last Online: Dec 18th, 2023 11:23 Join Date: Oct 2017 Location: Sherborne	In my experience, the only solution is to clean or replace the PCV and flame trap, and possibly rear cam seal if oil is still blowing past it after the PCV overhaul. With the right wiggling and persuasion, I can remove and refit the PCV on my B200Fs without removing the intake manifold...bit of a PITA but it will come out. __________________ Barges of Distinction: '96 945 SE LPT M90 '95 945 GLE D24TIC M90 ‘88 745 GL B200E M47

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)