Will a piston have compression if a cranks senor is bad i tries to test compression to a pistoon but it has no compression and it looks like the spark plugs have no spark
Compression is an engine basic function, no compression means that cylinder won't function. A bad crank sensor will not cause a loss of compression, that is an internal engine problem,ie bad valves, broken piston, etc. a no spark could be the bad crank sensor, but I believe that you have more serious problems with the engine.
do agree with tennis shoe, it can be a gasket as well, no compression is a bad thing.
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