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The 1.6 litre four cylinder engine in a 1990 Nissan Pulsar NX has a timing CHAIN
how to change a thermostat on a 1990 Nissan pintara
I don't know if this helps, but I have noticed that documentation for Pulsar's of that era is hard to find. Usually I have been guided toward Sentra documentation. That may be easier to find.
=on your head=
3.9Liters with filter change
Change the fuel filter.
Look for a black canister -- typically somewhere on the driver's side of the engine bay (it is on my niece's 1993 Pulsar). It will have a screw lid on the top. Open and check the level on the dipstick that is an integral part of the power steering canister lid. Be careful to NOT overfill. Bill L.
it has an effect if you dont change the fuel injected
It is inside the fuel tank , they are a internal unit .
no 84 and 85 change out.
Nissan dealer
Nissan Presea was created in 1990.