Nissan Repair: no spark, crankshaft position sensor, nissan altima

Question
i have a 1995 nissan altima.iam on my third distributor.i have checked coil and have power out of it. no power to plugs.i checked to see if timing jumped,and it did not,checked ohmn resistence on crankshaft position sensor and it was within spects.iam getting power to everything that is ignition fused.it just dont make sense.power transister has voltage.camshaft positon sensor has voltage.i dont know anymore.

Answer
Harry,

If you are talking that the distributor is not getting fire but it was a replacement that worked for a time then I would be thinking that there is oil on the pickup and that is causing the problem.  Now, if this is the case and this is the third distributor then I would assume there is too much blowby oil geting past the rings and the pressure is forcing oil into the distributor.  If this is the case the engine needs new piston rings.