loss of power
If you're getting gasoline in the oil, then you have bad piston rings that are allowing gases into the crankcase. You can find which piston(s) have bad rings by doing a compression test; a cylinder with bad rings will have lower compression.
smoke loss of power
loss of compression, loss of power, oil is "milky"
broken rings,hole in piston,bad valves
Bad compression is usually worn out piston rings, no compression is usually bad valves - assuming it's a 4-stroke.
because somewhere you are "leaking compression" with bad piston rings, intake or exhaust valves or similar.
bad valve seals, bad piston rings bad valve seals, bad piston rings
Low Compression usually means that the cylinder rings are worn. You should also do a leak down of each cylinder. That will pinpoint which cylinder/s are bad. Also,possible poor seating of valves or improper valve seat contact.
Type your answer here... Burnt intake or exhaust valve, hole in piston, broken piston rings, bad head gasket, valve spring broken.
Yes, bad piston rings can lead to high fuel consumption. Worn or damaged piston rings can allow engine oil to enter the combustion chamber, causing incomplete combustion and increased fuel consumption. Additionally, if the rings fail to maintain proper compression, the engine may work harder, further reducing fuel efficiency.
Your piston rings may be bad. Do a compression test to find out.
The engine will be losing compression, and possibly burning oil. Check each cylinder to determine the compression. The loss could also be caused by a valve problem.