2004 volvo xc90 2.5T cam seal vs vvt leak

[huzzsaba]

Quick question in regards to the oil cooler, is there oil going into it or coolant? if there is a oil leak from the oil cooler, is it where the oil cooler connects to the oil pan, or from the hose that connect to the oil cooler?

[beoutside]

When I rebuilt the head on our 99 I replaced the PCV system at 180,000. I was just getting ready to do the belt and water pump at 240000 since I noticed a leak coming the cam seal behind the vvt on the exhaust cam. I may not have pressed the seal in properly the first time but I will check the PVC system to make sure that isn't why I am having cam seal issues. My question is while I was checking the timing marks and getting the vvt spring tension set (after replacing the cam seals/pump and belt) I had to reset the vvt by a tooth. When I removed the vvt cap ( after new seals and running 20 miles)I had a few maybe 2 to 5 ounces of engine oil come out the vvt but had not seen any oil leaks while testing it running for 20 miles. ( P0014 code timing off) Which is why I pulled the vvt back off and reset it with cam locking tool and crank pulley set to block TDC. I had everything set up the first time then hand cranked the engine two revolutions plus went past TDC then hand cranked engine back to TDC all marks had lined up but I think I had a little slack in the belt and it was off one tooth. It looks to me the way the seals work on the vvt and engine block that oil would have to enter the inner vvt and is held in or prevented leaking by the vvt cap? Just wondering if I may need to redo that seal again........ I guess if I run it for a while and do not get any leaks that is the way the vvt interacts with the cam shaft and engine block and camshaft seal..... appreciate your time as always

I may just replace the vvt after reading your recommendation on mileage......

#1: yes same tool as 850, about $65 of ebay.

#2: at 190k miles, consider new VVT hub and cam seals, see thread below...
http://volvoforums.com/forum/volvo-xc90 ... 251/page3/

#3: yes, the O-rings are $16 on ebay, but the VVT hub may have too much play that causes leak at cam seal interface. So, check for play first.

#4: if not leaking, leave it alone.