All posts tagged engine

Changing the Valve Cover Gasket

The Miata’s engine has an easy to change Valve Cover Gasket, which I chose to replce because I saw some potential oil leak at the bottom of the car. I asked on reddit and the users said that it was probably a bad valve cover gasket and should be replaced, which is what I ended up doing. I am not sure if that has fixed the problem yet but will keep checking. It is quite an easy fix.

Spark Plugs and Plug Wire Replacement

One of the relatively easy improvements to your engine’s performance besides an oil change is to replace the spark plugs and the plug wires which is what I did today.

The recommended spark plugs for the NB Miata are the NGK Iridium IX plugs as seen in Figure 1. I also decided to replace the plug wires with NGK blue plug wires, both of which I purchased from Rockauto.com.

For the 1999 NB Miata, which has a 4-cylinder engine we need 4 spark plugs (Figure 2).