Hi guys ,i think i may have damage an oil seal somewhere when I've done a boost leak check ,to much air pressure , any ideas where it can leak oil from??? the leak comes from the back of the engine somewhere, i didn't had the time to look properly but maybe someone done the same mistake like me in the past and knows were to look.

Possibly the rear main seal.

 

I've pushed 1.5 bar through my own car without issue on a boost leak test, what pressure did you hit?

Don't even know to be honest.but i think is coming from higher above the main seal,but like i said i didn't check properly.

Rear cam cover plugs potentially, if it's high up. You will just have to investigate.

Possibly the rear main seal.

 

I've pushed 1.5 bar through my own car without issue on a boost leak test, what pressure did you hit?

 

Is that with the PCV system deleted? FSM recommends no more than 5PSI as you no doubt are aware, due to the PCV system allowing the rockers etc to become pressurised, popping the cam oil seals out at the front is apprently quite common when too much pressure is applied.