Fight hill 215-9 dials have unusual sound, how to return a responsibility?
Two, the engine abnormalsound and load a lot of noise and load have a significant relationship, at the time of diagnosis can be used to lift the load by cylinder test, usually adopts single or double cylinder misfire is terminated by one or two cylinder load, to identify abnormal noise and load. 1, a cylinder break fire, abnormal sound no or less dayton. The causes include piston knocking, connecting rod bearing loose, piston ring leaking and piston pin broken. 2, a cylinder break fire, then sound aggravating, or originally no sound, at this time but appear sound. The reasons are: ring piston pin copper sleeve Songkuang; piston skirt taper; piston pin out; connecting rod bearing cap over or loosening bolts connecting rod bearing alloy melt off the net; the flywheel fixing bolts are loose too much. 3, adjacent two cylinder break fire abnormal sound to reduce or disappear. The reasons for the ringing are: crankshaft bearing looseness.
First, the relationship between abnormal sound and engine speed, the most common noise of the engine depends on the speed of the engine. 1, abnormal sound only exists when idle or low speed running. The reasons are: send the sound of the piston and the cylinder wall clearance is too large; the piston pin assembly or tight connecting rod bearing preloaded with guide hole; tappet clearance is too large; cam profile wear; sometimes, starting to catch loose and the pulley rings (obviously in the speed of change). 2, maintain at a speed when the sound disorder, rapid deceleration, one after another issued a brief sound. The causes of the noise are as follows: when the camshaft is broken or the nut is loose; the crankshaft breaks; the piston pin bush is loose; the camshaft is too big or the Bush loose. 3, abnormal sound in the engine accelerated acceleration, and maintain high-speed operation, the sound still exists. The causes of the vibration are as follows: the bearing of the connecting rod is loose, the Bush is burned or the size does not match; the crankshaft bearing is loose or the Bush is burnt; the piston pin is broken; the crankshaft is broken.
