Hi,
It's possible that the timing has jumped. Have you checked to see if there are any diagnostic trouble codes? Here is a link explaining how it's done on a Nissan OBD1 system:
https://www.2carpros.com/articles/nissan-obd1-diagnostic-trouble-codes-and-retrieval-procedure-1984-to-1994
Next, if you are unable to retrieve codes, then I recommend checking engine compression to see if it may have jumped. Here is a link you may find helpful:
https://www.2carpros.com/articles/how-to-test-engine-compression
Let's start with this. Hopefully, it will point us in the right direction.
Take care,
Joe
Also, let me know if the battery is good in the vehicle.
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Tuesday, March 15th, 2022 AT 8:37 PM