Відомий дефект: Some B6304 blocks in 960/S90 applications have been reported with porous block casting leading to external coolant leaks beneath the exhaust manifold, though this is described as not very common.[3]
Відомий дефект (ГРМ): Failure of the timing belt on B6304 engines commonly causes major internal damage including multiple bent valves and cracked valve guides.[3]