Can crank position sensor cause no spark?
A bad Crankshaft Position sensor is a common cause of no starts. The signal from this sensor goes to the PCM or ignition module that switches the ignition coil(s) on and off. In ignition systems with a single coil and distributor, a bad coil or a cracked distributor cap or rotor can prevent the spark plugs from firing.
Does a crank position sensor control spark?
The crank position sensor (CKP) is perhaps the most important sensor in the modern engine. If you have crankshaft sensor issues, the ECM can’t synchronize fuel injection, spark ignition (for gasoline engines) or control variable valve timing.
Where is the thrust located in a crank endplay engine?
This makes crank endplay a spec that cannot be overlooked, and that alone should motivate all but the laziest of engine builders. We will be using both a small- and big-block Chevy for the images in this story, but the process is the same for all engines even when the thrust is located in the center main bearing as with Fords and the GM LS.
Why is crankshaft endplay important in a car?
It’s all the checking and clearancing that is essential before the engine is assembled, where all the real effort is located. Crankshaft endplay never seems to garner the same level of attention as say, rod and main clearance, but even with its somewhat limited attention, this is still a crucial area.
How is the deflection of the crankshaft affected?
Crankshaft deflection is affected by several factors in addition to cylinder pressure. These include the structure of the block and crank along with the strength of the bearings, the bearing clearance and the condition of the oil film.
Why was Regrinding the crankshaft important in the 40s?
Regrinding the crankshaft is an important part of the engine rebuilding process. It was almost an art in the ‘40s, but it’s pretty routine now. However, there are still plenty of myths and misunderstandings that are left over from the past that we still have to deal with today.