Newport Beach, CA — A former husband and wife who lived in Newport Beach have pleaded guilty to cheating on their taxes and will be sentenced on Aug. 13.  Richard Engel, 67, could face up to 12 years and 8 months in prison and his ex-wife, Jolene Engel, 60, faces up to 5 years and 8 months. They face fines and restitution totaling more than $3.2 million. The couple failed to pay taxes on $180 million dollars from their power plant refurbishing business, Powerplant Maintenance Specialists Inc.  They socialized in …