Engine Seals

[Dupont24]

how would i know when to replace my cam seals, the dealership tells me that they need replacing, but i don't think so.. also my distributor o-ring has a slow leak, needs replacein, but if i don't put it back on correctly, won't i mess up my firing

[AWJ]

cam seals are most likely fine unless it's leaking oil out the front or back of the head. If you don't put the distributor back in the same, it will mess up timing. You can mark the position with a paint pen or punch.