they are puking oil and smoke out of them... theres a little lip where they would butt against the Cylinder head looks like thats where a o ring would go just taking a guess tho as i dont have a clue...
i bought the fmf o rings and spring kit but the o ring is like 1/4 to big..can i just use a high temp silicone and slide the expansion chambers back on? would it seal it?