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Author: Steve RichardsSteve Richards Date: Jun 1, 2008 20:56
Just checking in, the missus has the 3.7L and the specs say plugs every 30k.
She's really up in arms about the fuel prices. That's a topic for another
day. Sure am glad I don't have a diesel!
She's getting 17-19 (80%% hiway). I pulled the plugs (50K) and they are the
original NGKs. We're the second owners and I am really surprised that they
haven't been changed. Air filter is clean and we use 87octane.
Anyway, I am planning on replacing the plugs tomorrow with Bosch Platinum
IIs. Pros/cons and your feedback would be appreciated.
TIA!
Steve
--
2008 Sonata SE- His
2005 Grand Cherokee-Hers
1997 Holiday Rambler Endeavor LE 36'- Ours
AZ home for sale near Laughlin, Las Vegas, BHC:
http://www.realtor.com/realestate/golden+valley-az-86413-1089865380
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Author: SpdloaderSpdloader Date: Jun 1, 2008 23:03
> Just checking in, the missus has the 3.7L and the specs say plugs every
> 30k. She's really up in arms about the fuel prices. That's a topic for
> another day. Sure am glad I don't have a diesel!
>
> She's getting 17-19 (80%% hiway). I pulled the plugs (50K) and they are the
> original NGKs. We're the second owners and I am really surprised that they
> haven't been changed. Air filter is clean and we use 87octane.
>
> Anyway, I am planning on replacing the plugs tomorrow with Bosch Platinum
> IIs. Pros/cons and your feedback would be appreciated.
>
> TIA!
>
> Steve
> --
>
> 2008 Sonata SE- His
> 2005 Grand Cherokee-Hers ...
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Author: Mike RomainMike Romain Date: Jun 2, 2008 06:33
Well you don't really have a traditional Jeep engine, but you should be
aware that most of the older Jeep 4.2's and 4.0's basically refuse to
run on Bosch platinum plugs. They work for a couple weeks, then foul
and fail. Not all of the engines. but a 'lot'.
I have fixed more bad idle problems (or as many) in 4.2 engines by
simply tossing their new 'fancy' platinum plugs in the trash and going
back to stock plugs, than I have by fixing that dreaded Carter BBD carb.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
'New' frame in the works for '08. Some Canadian Bush Trip and Build
Photos: http://mikeromainjeeptrips.shutterfly.com
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Author: rfeirsterfeirste Date: Jun 2, 2008 10:26
Wrong plug in that vehicle. The OEM NGK's are a good choice as are dual plat
plugs from Champion. The current Bosch plugs are a gimmick.
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Author: maxpowermaxpower Date: Jun 2, 2008 12:47
> Just checking in, the missus has the 3.7L and the specs say plugs every
30k.
> She's really up in arms about the fuel prices. That's a topic for another
> day. Sure am glad I don't have a diesel!
>
> She's getting 17-19 (80%% hiway). I pulled the plugs (50K) and they are the
> original NGKs. We're the second owners and I am really surprised that they
> haven't been changed. Air filter is clean and we use 87octane.
>
> Anyway, I am planning on replacing the plugs tomorrow with Bosch Platinum
> IIs. Pros/cons and your feedback would be appreciated.
>
> TIA!
>
> Steve
> --
>
> 2008 Sonata SE- His ...
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Author: SteveSteve Date: Jun 2, 2008 14:12
Steve Richards wrote:
> Just checking in, the missus has the 3.7L and the specs say plugs every 30k.
> She's really up in arms about the fuel prices. That's a topic for another
> day. Sure am glad I don't have a diesel!
>
> She's getting 17-19 (80%% hiway). I pulled the plugs (50K) and they are the
> original NGKs. We're the second owners and I am really surprised that they
> haven't been changed. Air filter is clean and we use 87octane.
>
> Anyway, I am planning on replacing the plugs tomorrow with Bosch Platinum
> IIs. Pros/cons and your feedback would be appreciated.
As far as I'm concerned, there are NO "pros" to Bosch platinum plugs.
The tiny center electrode is a perfect design... IF your goal is to
completely negate the longer wear life of Platinum by forcing the arc to
strike in exactly the same place every single time. And if you want to
make sure that the metal electrode erodes down so that its below the
face of the surrounding hard insulator, and therefore one little fleck
of deposit can cause it to misfire.
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Author: aarcuda69062aarcuda69062 Date: Jun 2, 2008 15:55
In article comcast.com>,
"maxpower" comcast.net> wrote:
>> Just checking in, the missus has the 3.7L and the specs say plugs every
> 30k.
>> She's...
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Author: Steve RichardsSteve Richards Date: Jun 2, 2008 23:30
Alrighty, read lots of posts and I thank you all for the input. My buddy
(Manager) at the local 'zone is a Mopar nut and sees it all...
He stated that he read an article or TSB somewhere that stated Chrysler did
not recommend anything other than the OE plugs, citing their belief was that
the Bosch platinum (and variants) caused pre-ignition. So, I went OE,
although no NGKs were available, so in went Autolites. Funny thing is,
'zone's system states gap at .044, underhood sticker says .040. Set them all
at 40 and took her for a spin to Laughlin and back. 75 miles, 20 mile 6%%
grade down into the valley and back up- 23.2!!!!! We have never gotten that
result before.
In brief, I'm stuck on the OE plugs, and just put Autolites in my 97 Ford
460 motorhome chassis. Have yet to run a full tank through her...
Thanks all for your valuable insight!!!!
--
2008 Sonata SE- His
2005 Grand Cherokee-Hers
AZ home for sale near Laughlin, Las Vegas, BHC:
http://www.realtor.com/realestate/golden+valley-az-86413-1089865380
"Steve" wrote in message
news:G_-dnb60OZ2z_9nVnZ2dnUVZ_vWdnZ2d@texas.net...> Steve Richards wrote:
>> Just checking in, the missus has the 3.7L and the specs say plugs every
>> 30k...
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