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one of the causes is bad low quality fuel
Intake valve and exhaust valve.
Yes it can, since the valves are one of parts that transfer heat from combution chamber. Other thing is that exhaust valve opened to long causes exhaust system to overheat.
Indicate inlet and exhaust valve clearances of Toyota 5k engine
the valve bent because the piston hit it, due to a weak valve spring or over revving the engine
.16 of an inch both for intake valve and exhaust valve [cold]
Three. Inlet valve, fuel injection valve, exhaust valve.
Exhaust Gas Recirculation (ERG) recirculates a portion of an engine's exhaust as back to the engine cylinders. On a Renault scenic, the valve is located at the top center of the engine.
The exhaust lifters will line up with the exhaust manifolds,Remove the valve cover if your working on a V8 and the valve that lines up with the exhaust port will be the exhaust valve,If it is a Chevy V8 they will be from standing in front of the car exhaust,intake,intake,exhaust,exhaust,intake,intake,exhaust.
metal (steel)
It relieves the cylinder of exhaust on the 4th stroke of a 4 stroke engine.
0.14mm intake and exhaust