Always check your repair monuel before using any tip to see if it will hurt your electrical or ignition system. Increase the rpm until the noise is heard then disable one fuel injector at a time. When the noise quits you have found the cylinder with the problem. If your engine is carb you have to pull one spark plug wire at a time to determine the cylinder. If the noise does not quit the problem is in the top end of the motor or the belt or acces. system. One last hint, cracked automatic flywheels will sound just like a rod bearing.
first you must determine that, it's NOT a rod knock or rocker arm
did you disassemble the engine to determine the rod condition? some harmonic balancers will make a knocking sound when they go bad
a lot of times its your timing belt, if its more of a knock its could be a rod knock
And engine knock is normally caused but I worn crankshaft bearing or rod bearing.
light slapping knock is a piston knock a loud heavy repetitive knock is a connecting rod Very Bad
Probably a bad rod bearing
A loud knock is usually associated with a rod bearing. The rod connects the crankshaft to the piston. If a rod bearing went out, possibly from an oil pump going bad, it would stall out the motor.
A bearing knock, or a rod knock develops when the bearings between the rod and crankshaft wear, leaving a gap, allowing the crankshaft to slap the connecting rod. The knock develops slow for a few miles but once the rod starts to knock then the gap increases because the metal in the rod and the crankshaft get destroyed and deteriorated. As the gap increases the knock gets worse, and as the gap increases the knock and the damage will rapidly get worse. Within a short while the connecting rod will break open and get stuck between the crank and the engine block, possibly cracking the block and destroying the crankshaft. The engine is now inoperable :< To prevent the rod knock, let your engine warm for a minute or so before driving to ensure the engine oil has been pumped throughout the engine, and get regular oil changes, because a thin film of oil is all that separates these engine parts, and dirty oil will be squeezed between the metal parts, increasing the rate of erosion. .
The engine will have a distinct "Knock" while running.
It could knock or squeak.
Fine it almost sounds like its coming from up in the head area and not a rod knock? OMG
The reason for rod knock is there is play where the connecting rod Jonie's piston. Or play where the rod connects to crankshaft. this usually results from a constant lack of engine oil. this is when wear between rod and piston, and/or rod and crankshaft will occure. the only way to permanently fix is to machine the rod that is worn, basically taking apart most of the engine. try using a high viscosity oil with an additive. this will fill in the wear , and maybe you will be OK.