coil has power but no spark?

[smug510]

hey, ive got a problem my 89 sohc motor will not start it has power to the coil [ tried two coils ] but no spark?

[NISTECH]

distributor?

[smug510]

i checked the cas by turning on my ignition and takinkg out my disrtibutor and turning it by hand , and i could hear my injectors opening , so i figured it wasent my cas

[NISTECH]

check your rotor inside and the cap quality. If its a made in italy cap just replace it and the rotor they are notorious for giving nissans problems.

[smug510]

i dont think it is the rotor , i am checking for spark with a sparkplug in the end of the coil wire than i just touch to ground to see any spark , ive also checked all of my grounds and power wires all good

[Drift]

If your getting spark to the distributor, then check each spark plug wire w/ its plug and make sure you are getting spark to each plug. If one of them not sparking then you can check the plug, wire, or its section of the cap. If you are getting spark to each plug then you need to check your timing. Trust me, I had this same problem. When rotating your cas, did you mark where it was set before for the appropriate ignition timing?

[NISTECH]

if your not getting spark from the coil as you have mentioned you have either an ecm problem or still a cas problem. there are 2 signals sent from the cas one for 120 degree and one for 360 degree signals. you would really need a DSO to check your cas. one signal is for cyl and one is for timing degrees. the cyl one is for injectors the timing is for coil. if you have a DVOM with a high sample rate you may be able to catch signal variation to the coil since it is an on off grounding signal. Do you have an ecm controlled tach if so you can watch it while cranking should be same signal from cas that is used for ignition timing but the tach would not come off the same line that fire coil. basically one signal into ecm and 2 out (one for coil and one for tach.)