Answer A is wrong. Valve spring tension is tested with a valve spring tension tester.

Answer B is correct. This valve spring is being tested for spring squareness..

Answer C is wrong. Valve spring installed height is, measured with the valve installed into the cylnder head.

Answer D is wrong. Technician B is correct.

Answer A is wrong.

Answer B is wrong.

Answer C is wrong.

Answer D is correct. A leaking valve seal will cause oil to leak into the cylinders chamber over time, usually overnight.

Answer A is wrong. Both Technicians are correct.

Answer B is wrong. Both Technicians are correct.

Answer C is correct. Always make sure the two holes and all bores are in alignment when replacing the crankshaft bearing inserts.

Answer D is wrong. Both Technicians are correct.

Answer A is wrong. Both technicians are correct.

Answer B is wrong. Both technicians are correct.

Answer C is correct. Both restricted fuel injectors and leaking secondary wires will reduce the cylinders contribution. This could happen. It is also likely the head gasket is at fault.

Answer D is wrong. Both technicians are correct.

Answer A is wrong. Excessive hydraulic lifter preloads will cause low manifold vacuum.

Answer B is correct. Insufficient lifter preloads will cause valve train noise.

Answer C is wrong. Technician B is correct.

Answer D is wrong. Technician B is correct.