Spark plug change on a h3

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Dec 7, 2010 | 02:47 PM

MadManMike

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Joined: Oct 2010

Posts: 41

Spark plug change on a h3

changed the plugs on my 2006 H3 today ( 72989 ) miles
after the change the truck runs like sh#t put in
Bosch Platinum +2 plugs do i need to stay with the Iridum plugs
on that thanx Mike

Dec 7, 2010 | 03:15 PM

drtom

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YA gotta make sure the're the exact same length as orig,,and of course gapped rite,,and??

Dec 7, 2010 | 03:55 PM

Bunger

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Joined: Sep 2009

Posts: 1,356

From: Connecticut

Everyone on one of the other Hummer forums say to stay with OEM plugs.
Everything else will run like crap.

Dec 7, 2010 | 04:09 PM

drtom

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ZOWIE!,at 10 bucks EACH they otta last 100000!

Dec 7, 2010 | 05:02 PM

MadManMike

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Posts: 41

I get free parts from a friend who works at a auto parts store
guess i go back to OEM plugs.

Dec 8, 2010 | 06:04 AM

Widespread Hummer

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Joined: Apr 2010

Posts: 568

From: The Mitten

I experienced the same thing with Bosch plugs. Always used them in for other applications but it does seem that OEM is the right way to go for the H3

Dec 8, 2010 | 10:13 AM

Doc Olds

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Joined: Jul 2007

Posts: 13,056

From: Boat Town USA MI

AC Delco or champs, the rest don't hold up with the coil on plug packs. Been discussed over and over on hummer and chevy truck forums.

Dec 8, 2010 | 11:21 AM

drtom

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no resistor wires in coil pack? do oem plugs have built in res?

the real reason??

Dec 8, 2010 | 10:37 PM

2wheelmonster

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Posts: 1,439

mmmmm doc is right over and over and over

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