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Sparkplug
Dodge Dakota
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5/02/2004
15:43:39
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 Subject: Spark plug question
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Did a search and found that Autolite 3923 plugs may help with pinging. Who has tried these plugs and what results did you get? What gap works the best for you? Currently I have to use 89 octane especially in the winter to stop the pinging. Also did the 3923 plugs affect gas mileage? Thanks!
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TOMZ
Dodge Dakota
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5/02/2004
15:54:01
|  RE: Spark plug question
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Hi,
The 3923 plug is very good for our trucks. You may actually increase your gas mileage. If your having trouble with ping try adding a 180 thermostat. This will give the same effect, along w/ the plugs, as increaseing your octane.
If your ignition is stock gap the plugs at .040 to .045. You'll have to find which runs best for you. If you have an aftermarket ignition you can enlarge the gap up to .060.
I don't know how old your truck is but you may want to change the rotor and distributor cap to the napa brass. The part no.s are MO26 and MO28.
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Darryl
Dodge Dakota
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5/02/2004
17:59:45
| RE: Spark plug question
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Bosch Platinum +4 #4417
Darryl
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TOMZ
Dodge Dakota
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5/02/2004
18:07:01
| RE: Spark plug question
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darryl,
I don't know from personal experience, but I was under the impression that the dakota's or more precisely the magnum engines did not work well with ANY brand of platinum plus plugs. I've heard this several times here, I thought that the prefered plug wre the ones made from either copper or the "single" platinum series. I could be wrong, please enlighten me.
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Sparkplug
Dodge Dakota
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5/02/2004
18:56:56
| RE: Spark plug question
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Oops, forgot to mention my truck is a 2001 fullsize Ram 1500 (base model) with the five speed manual transmission. Engine is the 3.9L magnum. Should be the exact same engine as what is used in the Dakotas. Mileage is 25,000.
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What
Dodge Dakota
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5/02/2004
19:02:19
| RE: Spark plug question
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OMG. I cant believe Dodge actually put that dog in the even heavier Ram. Sorry for ya man.
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GB2000
GenIII
5/02/2004
19:09:41
| RE: Spark plug question
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TOMZ,
Some people swear the Bosch Platinum +4's work great in their trucks and that the Autolite 3923's sucked. From what I've read, I've decided that all engines react to plugs (and other mods) differently.
Josh
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dickie
Dodge Dakota
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5/02/2004
19:33:37
| RE: Spark plug question
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Does it really matter. I just changed a set of Champion truck plugs to Bosch Platinum +2 and I am waiting for the results. But really I could have left the truck plugs in for another 30-40K. Replaced Champion truck plugs with only 25000K. The gap changed from .040 to .043, not that big of a difference and had a brownish tan so i am running in the correct heat range. 20mpg highway, now....
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Darryl
Dodge Dakota
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5/02/2004
20:04:18
| RE: Spark plug question
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In my '99 V6 Dak with all the usual mods found on this forum, the one step cooler Bosch +4 #4417's have worked by far the best for me in terms of engine response and MPG.
And several quick reads of the plugs verify what I've been feeling. The 3923's were way to cold for my truck, and again, several plug checks proved they were to cold.
Darryl
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Philip
Dodge Dakota
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5/02/2004
22:31:25
| RE: Spark plug question
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Message:
Im not so mechanically inclined, so this question may seem stupid to most of you, but I was wondering what it means to 'gap' sparkplugs. If I switch the factory plugs to something else will I see an improvement to the MPG, HP or both? Thanks. I have a 3.9L 2003 Dakota SXT with 18k miles on it. Thanks.
Philip
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Bob Lincoln
Dodge Dakota
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5/03/2004
08:10:00
| RE: Spark plug question
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The gap is the distance between center and side electrode, that the ignition secondary voltage has to jump to fire the plug. Standard for our trucks is .035".
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