correct spark plugs for V6 4runner

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Lloyd Hanning - 30 Dec 2004 02:26 GMT

I just finished replacing the original plugs in my 2000 4runner. I went on
line and found Autolite platinum plugs. Well, AFTER I get them in, I notice
in the owners manual there's warnings about NOT using the single electrode
plug. I'm suppose to use the two electrode plug. Can someone tell me WHY?
And, will I damage the engine if I leave the autolite plugs in?
I was getting pretty bad gas mileage so I thought new plugs would help. The
engine has 61k and the old plugs didn't look all that bad.

Thanks

Lloyd Hanning

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Scotty - 30 Dec 2004 04:00 GMT

Why did you change them if they looked okay? I think that you should
install the old ones asap so that no damage is done by hotspots etc in the
pistons/chambers. If you think that your fuel consumptions out Id be
looking at the airfilter, then your fuel then maybe plugs but if they are
okay, try the rest first.

Let us know how you went

>I just finished replacing the original plugs in my 2000 4runner. I went on
> line and found Autolite platinum plugs. Well, AFTER I get them in, I
[quoted text clipped - 9 lines]
>
> Lloyd Hanning

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Lloyd Hanning - 30 Dec 2004 05:17 GMT

Scott: When I took the 4runner in to the dealer for a wheel alignment, the
guy said I need to have the plugs replaced as they're only 50k plugs in
there. I had changed the air filter about a month ago. Yeah, it could be the
fuel. I just don't understand the deal with the spark plugs. It's similar to
the fuel filter. According to Toyota's FAQ, the fuel filter is typically not
a scheduled maintenance item and is only changed when necessary....What kind
of answer is THAT? Do I wait until I'm stuck on the side of the road to
change it? When does it become necessary? Well, anyway, I'm getting off the
subject. Putting those old plugs back in is a pain, but if that's what I
have to do, that's what I'll do!

Thanks

Lloyd Hanning

> Why did you change them if they looked okay? I think that you should
> install the old ones asap so that no damage is done by hotspots etc in the
[quoted text clipped - 18 lines]
>>
>> Lloyd Hanning

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Scotty - 30 Dec 2004 06:06 GMT

From what I have heard (Ive always used the right ones) incorrect plugs can
cause hot spots causeing premature engine failure. Thats the worts case
senario Id say but hey why change whats the deigned unit for the vehicle.
Can you buy new correct plugs from around where you are? Thats the
direction Id go. Fuel filters, I change mine each 2 years when I do a full
service (which is done yearly) for the cost of the filter its stuff all
seeing as some fuels these days are of questionable quality.

> Scott: When I took the 4runner in to the dealer for a wheel alignment, the
> guy said I need to have the plugs replaced as they're only 50k plugs in
[quoted text clipped - 35 lines]
>>>
>>> Lloyd Hanning

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