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Shawn_Guru
Dodge Dakota
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7/29/2002
18:46:55

Subject: spark plugs??
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I recently put the bosch platinum + plugs in my 99 3.9 dakota sport and it seems like i have lost alot of acceleration from the get go? any ideas on what might have happend?



Wedo
Dodge Dakota
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7/29/2002
18:57:59

RE: spark plugs??
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I've read here in the forums that the best spark plugs for the Dak's are Autolites. The number has escaped me, but you can find it here by searching for "spark plugs."

I haven't put them in yet, I've been traveling too much to upgrade, but that's the first thing I'm going to do.

Check your gap on the Bosch and make sure all the connections are snug. Those are the two biggest goof-ups when messing with the spark plugs.

Good luck,
Wedo



Clevite 77
Dodge Dakota
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7/29/2002
19:50:54

RE: spark plugs??
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3923's best 10 bucks I've spent



FredDQC
Dodge Dakota
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7/29/2002
21:53:21

RE: spark plugs??
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I have the same problem. Athough I found recently (after I put the platinum sp's)that the coil on the 4.7L is designed to take only copper core sp's. This may be also true in the 3.9 if it recomends the same Autolite 3923 sp's.



Clevite 77
Dodge Dakota
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7/30/2002
02:23:04

RE: spark plugs??
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the magnum engines don't run their best on Platinum plugs



Dr.Dakota
Dodge Dakota
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7/30/2002
12:58:41

RE: spark plugs??
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Somebody needs to talk to Harlow....



Bobby Daniel
Dodge Dakota
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7/30/2002
16:31:59

RE: spark plugs??
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I pulled my Bosch Plat +4 and put Autolite 3923's in. I feels better to me. For 10 bucks you can't go wrong.



Dr. D
Dodge Dakota
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7/31/2002
09:03:49

RE: spark plugs??
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The gap on the Bosch Platinum +4's is non-adjustable.
Different ignition systems and engine designs respond differently to the many brands of spark plugs out there.
In my 5.9L Dodge the 3923's work well but in my 4.3L Chevy V-6 equipped pick-up it likes the platinum +4's best.

Dr.D




Troy
Dodge Dakota
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7/31/2002
09:11:10

RE: spark plugs??
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I just replaced my 3923's with NGK V-Power ZFR6F-11 plugs and I like them much better. The truck is much smoother and the early morning hesitation/ bucking is gone. In my opinion the NGK's are a much better plug. I only had about 5,000 miles on the Autolites, so they're not worn out. I have switched plugs app. 5 times in 30,000 miles trying to find which one works best. The NGK's are the best in my opinion over the Champions, Bosch, or Autolites.



Texas Todd
Dodge Dakota
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7/31/2002
09:30:22

RE: spark plugs??
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Troy,

Thanks for your opinion.

Now, what year and motor do you have this experience with?

I hear ya and would like to know, since I'll be changing my stock plugs soon!

01 4.7 5spd LSD homebrew intake,(and beer!), AIT adjuster, ported TB, no stink'n belt fan.



Troy
Dodge Dakota
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7/31/2002
09:42:43

RE: spark plugs??
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Texas Todd,

2000 QC Sport Plus 4x4 5.9L 3.92LS (9.25 axle), every factory option
Magnaflow 3" single in/ 2-1/2" dual out
Kenne Bell equal-length headers with 2-1/2" y-pipe
NGK ZFR6F-11 plugs, indexed
Kenne Bell (Taylor) wires
Borg-Warner brass cap/ rotor
180 stat
Redline Water Wetter and Pro-Blend 40 below radiator additive
S-bolt
Homemade 4" cold-air induction
Baffle removed from air hat
K&N air filter
Mobil 1 and Purolator
Perma-Cool auxiliary oil cooler
Map sensor mod
TPS set at .774
clutch fan removed (electric fan on thermal switch)
timing advanced app. 2-3 degrees with sensor in bellhousing
Mopar Performance PCM
M1 two-barrel non-EGR intake manifold (new casting) w/ large turtle

On their way:
APS 50mm TB
GTS functional Ram-Air hood



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