A video instruction guide on how to check a crank shaft pulley can be seen on YouTube. Just type in "How to check crank shaft pulley", click on Search, then play the first video.
Check the crank shaft pulley
I would recommend that you do put a crank shaft head on a crank shaft. Putting any other type of head on a crank shaft could possibly break the head.
ck cam shaft sensor, check crank shaft sensor also.
Crank shaft
Check your crank shaft sensor. Had the same problem, replaced crank shaft sensor and fixed the problem.
Check your crank shaft sensor first.
Eccentricity is the deflection in the shaft away from truly straight. The turbine shaft when not turning will settle into a bowed shape (measured in thousandths of an inch), this is the deflection from straight. Large turbines are placed on turning gears as they are cooled or warmed up to minimize this deflection. As a turbine is started this eccentricity produces vibration as the deflection changes rotational position, if the turbine is started up too quickly this deflection will increase as a result of inertia trying to deflect the weight of the deflected shaft outward. Eventually the deflection, as a result of rolling the turbine up slowly, will straighten to the true center of the turbine shaft.
Check for power to the sensor. check for power and ground to the Ignition coil. If the crank sensor is adjustable, make sure that it is set to the proper gap.
The engine crank shaft is inside the engine
The crank sensor on a 2001 Malibu is located on the bottom of the engine near the crank shaft. It monitors the rotation and speed of the crank shaft.
Where is the crank shaft sensor located in a Audi a6