Are you sure that you have told him the correct way? The brether should be on the engine side, seal the nipple on the intake hose. If you are right, then ask your mechanic to consider changing career.will it affect the durability of engine ..
bcoz my case is, the foreman says the engine will bleed~ oil leaking out from gasket, seals.. (aka 七孔流血).. bcoz the air inside engine room.. got no where to go/release...
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