bobmarkert
Well Known Member
My AeroSport IO-375 engine has 115 hours on it and I'm doing my first condition inspection. I bought a new borescope, and not sure if that was a good idea or not! The problem is I don't know what I'm looking at. Cylinders 1, 2 and 3, their pistons and valves all look the same. Number 4 piston looks different. Some sort of crusting,... Or worse yet layers of metal flaking off #4 piston. I sure would appreciate an education on what I'm looking at. That will determine if I'm going to have a good night sleep tonight or burn 8 gallons of stomach acid an hour!!!!!!!!........
The first two pictures are of #4 piston
Thank you in advance
Bob
#4 Piston
#4 Piston zoomed in
Piston #1
#1 piston edge. Looks scarry me
#1 cylinder valve
The first two pictures are of #4 piston
Thank you in advance
Bob
#4 Piston
#4 Piston zoomed in
Piston #1
#1 piston edge. Looks scarry me
#1 cylinder valve
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