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Subject I had a similar problem a few days ago...
     
Posted by dTb on June 28, 2017 at 9:54 PM
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In Reply To Cam or main seal popped out? posted by nelso419 on June 25, 2017 at 08:52 PM
     
Message I installed adjustable cam sprockets and re-installed new cam seals. Everything ran beautiful until i got to the gas station and there was a large puddle of oil under the car.

Oil was being slung all over the timing belt. Yours?

It would only leak with the VTC activated. Yours?

I took everything apart (again) and inspected the gears and seals... everything looked good except for the one that popped out. Turns out it was a blocked oil return port in the head right behind the intake cam seal. Check this hole and make sure its not clogged. The way i found out is i sprayed B12 chemtool in there with the little straw that comes with the can and it sprayed out back at me. I poked at it and it had a lot of resistance, then popped and it was clear. This was on a fresh build and i probably got RTV in there or something.. im not sure about your history but its possible that it could be sludged up or got blocked. Something to check.

     
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