Purchased a 1970 XKE coupe with older restoration; found oil leaks on driver's side of engine, tightened front bottom head studs, resealed valve cover, cleaned and reseated oil feeder line and still have some leak at rear of valve cover and front of engine. Any ideas?

 

If the cam cover is over tightened it can cause the cover to become distorted resulting in a leak.

You may also have a leak from the front breather cover gasket.

 

Did you check the sealing of the cylinder head blanking plugs at the rear of the head by the cam covers ? One hole is sealed by the rev counter generator, and the other by a simple plus that is secured by two screws. Both use an 'O' ring for sealing.

Where is the leak at the front ? The front oil seal is a lip type and can harden-up then wear out when the car is put back into service, especially if the car is left to stand for years on end.

 

Thanks to both of you. I cleaned up the valve cover gasket and also the rear of the head cam covers to include the oil feeder tube to the rear. My mechanic found the front of the head was missing one of the nuts and studs so I inserted a 5/16 coarse bolt with flat and lock washer. It appears the leaks are fixed.