Honda Car Forum

"Jason" <jason@nospam.com> wrote in message
news:jason-2105050956080001@pm4-broad-18.snlo.dialup.fix.net...
> I agree that the regular plugs work as well as platinum plugs. I found the
> following info. at the NGK website--it's the reason I wanted to buy
> platinum plugs:
>
> "Platinum spark plugs last much longer than conventional spark plugs and
> perform more consistently over the course of their service life."
>
Oddly, I tried platinum plugs in our '85 turbo Volvo against the advice of
the gurus. Next year I took them out during the tune-up and found each had
no electrode left at all, only a pinhole in the insulator where the
electrode was! I can't imagine why the engine was any different from others,
but I have used the same brand (Bosch) platinums in other engines with great
results. Huh.

Mike

In article <bZ6dnf4CW6SZGxLfRVn-pg@sedona.net>, "Michael Pardee"
<michaeltnull@cybertrails.com> wrote:

> "Jason" <jason@nospam.com> wrote in message
> news:jason-2105050956080001@pm4-broad-18.snlo.dialup.fix.net...
> > I agree that the regular plugs work as well as platinum plugs. I found the
> > following info. at the NGK website--it's the reason I wanted to buy
> > platinum plugs:
> >
> > "Platinum spark plugs last much longer than conventional spark plugs and
> > perform more consistently over the course of their service life."
> >
> Oddly, I tried platinum plugs in our '85 turbo Volvo against the advice of
> the gurus. Next year I took them out during the tune-up and found each had
> no electrode left at all, only a pinhole in the insulator where the
> electrode was! I can't imagine why the engine was any different from others,
> but I have used the same brand (Bosch) platinums in other engines with great
> results. Huh.
>
> Mike

Hello,
Tegger informed us in one of his posts that with platinum plugs--you
should NOT adjust the gap. He stated that the reason: When you adjust the
gap--you can easily remove the platinum coating on the electrodes. He said
that once the coating is removed--the electrodes quickly rust away. I am
restating what he wrote and if he reads my post, he can explain it much
better than I explained it. I suspect that your mechanic or yourself
adjusted the gap and that's why the electrodes rusted away. He also stated
that Bosch makes terrible platinum plugs and that also could be the
problem. I prefer the NGK plugs.

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"Jason" <jason@nospam.com> wrote in message
news:jason-2105051756240001@pm1-broad-91.snlo.dialup.fix.net...
> In article <bZ6dnf4CW6SZGxLfRVn-pg@sedona.net>, "Michael Pardee"
> <michaeltnull@cybertrails.com> wrote:
>
>> "Jason" <jason@nospam.com> wrote in message
>> news:jason-2105050956080001@pm4-broad-18.snlo.dialup.fix.net...
>> > I agree that the regular plugs work as well as platinum plugs. I found
>> > the
>> > following info. at the NGK website--it's the reason I wanted to buy
>> > platinum plugs:
>> >
>> > "Platinum spark plugs last much longer than conventional spark plugs
>> > and
>> > perform more consistently over the course of their service life."
>> >
>> Oddly, I tried platinum plugs in our '85 turbo Volvo against the advice
>> of
>> the gurus. Next year I took them out during the tune-up and found each
>> had
>> no electrode left at all, only a pinhole in the insulator where the
>> electrode was! I can't imagine why the engine was any different from
>> others,
>> but I have used the same brand (Bosch) platinums in other engines with
>> great
>> results. Huh.
>>
>> Mike
>
> Hello,
> Tegger informed us in one of his posts that with platinum plugs--you
> should NOT adjust the gap. He stated that the reason: When you adjust the
> gap--you can easily remove the platinum coating on the electrodes. He said
> that once the coating is removed--the electrodes quickly rust away. I am
> restating what he wrote and if he reads my post, he can explain it much
> better than I explained it. I suspect that your mechanic or yourself
> adjusted the gap and that's why the electrodes rusted away. He also stated
> that Bosch makes terrible platinum plugs and that also could be the
> problem. I prefer the NGK plugs.
>
>
Good guess, but missed this time. I was already familiar with platinums and
just stuck them in the car, even though I didn't know why it is done that
way until just now. But at least I learned why the gurus recommended not to
use them, even if I don't know the actual cause. (Thanks for explaining why
the gaps are never tinkered with!)

Mike

Michael Pardee wrote:

> Oddly, I tried platinum plugs in our '85 turbo Volvo against the advice of
> the gurus. Next year I took them out during the tune-up and found each had
> no electrode left at all, only a pinhole in the insulator where the
> electrode was! I can't imagine why the engine was any different from others,
> but I have used the same brand (Bosch) platinums in other engines with great
> results. Huh.
>


Bosch Platinum plugs have very small center electrodes which are easily
damaged. I don't much like Bosch Platinums for that very reason. The
Autolite, AC and NGK Platinum plugs I have tried have all been very
reliable for me.

John