boost leak testing.

just curious if i do this should i have the engine at tdc so all the valves are shut ?

i did it the other day and useing a regulator at 13psi i could not manage to hold pressure the only real place i could find the air escapeing was out the dipstick is this normal ? and if it is should i still be seeing pressure rise on my boost gauge

 

dident blow it out, the seal on it is shithouse but can feel air coming out

 

had it on 5, couldent build pressure or hear anything, pumped up to 10, still nothing dident go over 13, compression is 155 +/- 5 on all cyls

 

also, car still runs fine still makes a good 15psi of boost just had bad idle