Possible Clues:

• Figurative incentive
• That's the root of the ruddy trouble with your motor
• Tempting dangler
• Does your motor decay? That's the ruddy root of the trouble
• Bedded a bishop, given incentive
• One is supposed to look better for eating it
• *..... and let it decay
• _____ River Saskatchewan
• Bodywork rust shows orangey colour
• Seems that has your ruddy motor falling to bits