Tuning Your 300ZX
300ZXs are notorious for their
habit of bad spark plug connections. If you have a misfire, check the
plugs and wires first. They make better contact if you push the wire
farther into the boot, put them on, then hold the wire and push
the boot down over it. replace the cap and rotor
periodically too, it can get pretty bad before you notice.
When looking at the distributor from the top, turning it clockwise
is advancing the timing.
The fuel filters used on 300ZXs are standard Nissan fare and are quite
good. Only in exceptionally rare cases will they be clogged enough
to cause problems. They should be replaced every now and then though.
The pumps are almost indestructable. That's good because they are
mounted inside the tank and are very expensive. They also have no filter on
the pump. The injectors
and the pressure regulator are
a bad problem however.
Nissan is replacing
all the injectors and fuel rail for free!
Simply take your car to any dealer and they'll take care of it for you.
It's also always a good idea to carry a fire extinguisher in any
300ZX, regardless of age. Oh, the above mentioned bad plug connections are
almost always the source of ignition of the leaking fuel.
Don't use cheap gas either, stick with name brands and always try to fill
up at the newest gas station you can find. This will ensure that
your gas is coming from the cleanest tanks possible. And don't use
gas with a higher octane than your car requires, it promotes carbon
build up in the intake ports, which is a chronic problem with
Got freaky electrical problems? Check the computer for trouble codes.
This is explained in detail in the any service manual. The most
problematic sensor I've
seen is the cyclinder head temperature sensor
It can cause
a wide variety of problems depending on how it goes bad.
Don't trust everything the computer says either.
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