Put a 21mm ring spanner on it, a block of wood under the spanner to the ground or to the suspension strut that goes across below the engine, then have someone hit the key to start the engine. DON'T really start it, just hit the starter so it will spin the crankshaft and the bolt will undo. Mine to about 3 hits of the starter to crack the bolt loose..
Harmonic balancer
not always usally makes an noise close to a rattle or knocking hence harmonic.use a broom stick or hose to use as a listening device to locate the exact place of your noise could be starter sticking in(ect...)
It wouldn't be a rattle snake or snake without a tail. Would it??
The possessive form for "the rattle of the snake" is the snake's rattle.
Could also be the harmonic balancer. When they go bad they make a knocking noise when the engine is idling. If it has a rod or main bearing going bad it would NOT affect the way it runs so you could have a serious problem in the motor itself. If the rod or main is going out it will not run long like that. SORRY TO BE THE ONE TO TELL YOU THIS. Ray
Young snakes with few segments on the rattle will be much lower in volume than a larger snake with a number of segments. However, if a snake lives a long life without losing rattle segments the rattle will become so long and heavy that it cannot be rattled easily and the sound, if any, will be subdued.
What is making the rattle sound? If it is a rattle-snake, the rattle is to warn anything the rattle-snake believes is a danger to the snake, to keep away.
The baby shook his rattle. That was spooky enough rattle your bones.
Rattlesnakes do not seek to attack humans. They use their rattles as a signal to warn animals, including humans, to not come closer. Without the ability to rattle, they couldn't give humans a warning before they might feel threatened enough to strike.
BLACK TAIL RATTLE SNAKE CAINEBRAKE RATTLESNAKE EASTERN DIMOND BACK RATTLE SNAKE MASSASAUGA RATTLE SNAKE MOJAVE RATTLE SNAKE PACIFIC RATTLE SNAKE PIGMY RATTLE SNAKE PRARRIE RATTLE SNAKE SIDE WATERS SPECKELED RATTLED SNAKE TIMBER RATTLE SNAKE AND WERSTERN DIMOND BACK RATTLE SNAKE
The Rattle was invented by cavemen.
End of tail