IDNLearn.com: Where your questions meet expert advice and community insights. Join our interactive Q&A platform to receive prompt and accurate responses from experienced professionals in various fields.

when conducting a cylinder leakage test, technician a says the piston must be at the top of the cylinder (tdc) when the test is being performed. technician b says a reading of 0 percent leakage indicates the piston rings are worn or broken. who is correct?