Volvo Owners Club Forum - View Single Post - How can I fix this hole in the cylinder head?

MasterBlaster · May 28th, 2019, 05:04

Actually, it's the drain from the cam back to the crankcase. If you plug it up, don't be surprised if the trapped oil pops the cam seal out about 12 seconds after starting.

May 28th, 2019, 05:04	#3
MasterBlaster New Member Last Online: May 28th, 2019 05:18 Join Date: Feb 2009 Location: PoCo	Actually, it's the drain from the cam back to the crankcase. If you plug it up, don't be surprised if the trapped oil pops the cam seal out about 12 seconds after starting.