If your 1995 Nissan Pulsar N15 is still misfiring after replacing the leads, plugs, distributor cap, rotor, and having the airflow meter reconditioned, you may want to check for issues with the ignition timing, fuel delivery, or vacuum leaks. A malfunctioning fuel pump, clogged fuel filter, or dirty injectors could also cause misfiring. Additionally, consider examining the engine's sensors, such as the crankshaft position sensor or camshaft position sensor, as they can impact performance if faulty. Lastly, ensure that there are no exhaust restrictions affecting engine efficiency.
The rubber seal is probably missing or bad. It should be replaced.
inder the drivers seat
According to a Nissan forum , it is located behind the alternator, above the oil filter. It's also important to check the PCV filter, which is a rectangular piece of mesh located inside the air filter housing. I can get plugged, reducing the airflow to the PCV valve, or (easily) go missing when changing the air filter.
vacum hose routlng
Even though you have already replaced the thermostat, there are other issues that can cause your Nissan Maxima to overheat. Your fan may be stuck and not operating as it should.
Nissan matic S type used to be Nissan matic J but matic S replaced the J
crank/cam sensor max airflow sensor
sounds like a faulty airflow sensor, this is not just a probe problem a few Nissan vehicles have had similar problems , it always turns out to be airflow sensor !
Normally it will last the life of the engine and is replaced when the engine is overhauled.
In the fuel tank - - in this file https://sites.google.com/site/mmagha55/nissan
in the fuel tank, not meant to be replaced as routine
You can't. The Datsun name was replaced by Nissan in 1982/83. Nissan are the parent company, Datsun where simply the brand.