Forum Discussion
cbr46
Dec 29, 2020Explorer
Let's not forget the spark plug issues of the 2V & 3V. The 2V heads have limited threads - be sure to use a torque wrench and not "guttentight". I replaced mine at 130k miles when the engine started running a little rough. I also replaced the coil-over-plug boots. It still has a slight stumble at low load around 1500 rpm. Kinda weird, actually.
The 3V plugs like to carbon up and stick, breaking the porcelain from the metal with the plug dropping into the cylinder (the plug is a very strange design). There's a kit to remove the dropped plug but it's expensive (relative term). Still better than pulling the head off. A buddy mechanic likes to hit the 3V plugs with short bursts of an impact wrench.
Best,
- bob
The 3V plugs like to carbon up and stick, breaking the porcelain from the metal with the plug dropping into the cylinder (the plug is a very strange design). There's a kit to remove the dropped plug but it's expensive (relative term). Still better than pulling the head off. A buddy mechanic likes to hit the 3V plugs with short bursts of an impact wrench.
Best,
- bob
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