96 Tocoma check engine light

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Charles - 26 Oct 2007 14:13 GMT

I have just bought a 96 tocoma with the 4 cyl engine. The check engine
light is on. It was missing on # 2 cyl. and had oil around the plug and
plug wire. Cleaning that up and replacing the plug has it running good now.

How do I determine if the miss on #2 is what caused the check engine light
to come on? How do I get the engine light off?

Should I replace the valve cover gasket? There is no leak to the outside,
only a little around the plug.

I assume the only way to check the codes is with a code reader. Is this
correct?

Thanks for any help.

Charles

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DanG - 26 Oct 2007 15:54 GMT

>I have just bought a 96 tocoma with the 4 cyl engine. The check engine
>light is on. It was missing on # 2 cyl. and had oil around the plug and
[quoted text clipped - 13 lines]
>
> Charles

Yes, a code reader will give you specifics. A common cause for the light on
older engines is the oxygen sensor.

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Jeff Strickland - 26 Oct 2007 17:39 GMT

>I have just bought a 96 tocoma with the 4 cyl engine. The check engine
>light is on. It was missing on # 2 cyl. and had oil around the plug and
[quoted text clipped - 13 lines]
>
> Charles

Yes, you need a code reader to check and reset the codes. The good news is
Autozone will either pull the codes and reset them for you, or allow you to
use the code reader to do the work yourself. If you are in California, they
will have you do the work. In either case, it is free.

Leaking around the plug is scary. I hope it is not because the plug was
loose. I discovered the hard way that plugs in aluminum heads should have
anit-seize used on them or they may not be seated and torqued properly.

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