i have a 01 lb7 duramax and it came into the shop cause the number 5 injector was leaking. removed it found corrosion in the seat. so i got a new one installed it it leaked too. took it off cleaned off the injector side of the seat (injectors are 4 months old) and re installed leaks less now but i cant have it leaking at all. any thoughts to what the hell is happening? :help:
