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Old 04-13-2008, 08:02 AM
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Default Changing sparkplugs on the 4.0 Pacifica

Looking at the configuration of the motor I realize there must be "tricks of the trade" needed when changing these plugs.

Could those guys experienced in these techniques please share them ?
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Old 04-13-2008, 01:19 PM
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Default RE: Changing sparkplugs on the 4.0 Pacifica

On the 3.5, I have heard the intake manifold has to come off. I have never done this maintenance yet. It might be the same for the 4.0
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Old 04-13-2008, 04:51 PM
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Default RE: Changing sparkplugs on the 4.0 Pacifica

Quote:
ORIGINAL: mrfixit454

On the 3.5, I have heard the intake manifold has to come off. I have never done this maintenance yet. It might be the same for the 4.0
OUCH. Can't you get to them from underneath?
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Old 04-13-2008, 06:32 PM
 
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Default RE: Changing sparkplugs on the 4.0 Pacifica

The upper intake MUST be removed. The plugs are platinum and are generally good for 100,000miles.
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Old 04-15-2008, 12:07 AM
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Default RE: Changing sparkplugs on the 4.0 Pacifica

Just sounds like a bad design to me[:'(]
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Old 04-15-2008, 01:28 PM
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Default RE: Changing sparkplugs on the 4.0 Pacifica

Lots of engines use this design now,not just chrysler. Compact engine compartments,low hood lines need this.
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Old 04-15-2008, 09:54 PM
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Default RE: Changing sparkplugs on the 4.0 Pacifica

hey bud,the cover needs to come off to get those back plugs,heres what the say...
When the spark plug has a single or double platinum tip, the recommended service life for normal driving conditions per schedule A in this manual is 100,000 miles (161 000 km). The spark plugs have a recommended service life of 75,000 miles (121 000 km) for severe driving conditions per schedule B in this manual. A thin platinum pad is welded to both or just the center electrode end(s) as shown in.moe
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Old 04-16-2008, 07:32 AM
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Default RE: Changing sparkplugs on the 4.0 Pacifica

Thanks Moe........ I guess I've got a couple years before I need worry !
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Old 04-16-2008, 04:21 PM
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Default RE: Changing sparkplugs on the 4.0 Pacifica

yes
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Old 04-16-2008, 04:21 PM
  #10  
Old 04-16-2008, 04:21 PM
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Default RE: Changing sparkplugs on the 4.0 Pacifica

yes sir!
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