Stock NGK plugs are the best plugs. As you raise the boost of the TT model, you can opt for the colder grade plugs but still stick with NGK.
.044 gap on tubro
.039 -.043
Remove the coil pack for each spark plug, then reach inside the hole with a ratchet extension and unscrew them.
NGK spark plug is the best for Toyota, Honda and Nissan
http://www.autopartswarehouse.com/details/QQNissanQQ300ZXQQPrestoliteQQSpark_Plug_WireQQ19871989QQPRP176008.html Best bang for your Buck .
it should be "0.44"
There are several things that can cause your 1993 Nissan 300 to idle rough. The most common cause is dirty spark plugs. Bad spark plug wires can also cause the problem.
It is near the first spark plug on the passenger side almost hidden under the intake plenum
Denso SK16PR-L11
0.044 is your spark plug gap.
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