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jph
Dodge Dakota
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12/11/2002
14:09:32

Subject: Spark plug knock cure
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Message:
I meant to post this message here, but I orignially put it in the performance forum:

I'm a new Dakota owner. I have an '01 Club Cab SLT with a 3.9 litre. I heard my first spark plug knock after a fairly long drive after I used 87 octane. When I used 89 there was no knock. I've read many of the posts about this knocking issue and have three questions:

1. It sounds like many of you use 89 octane despite the owners manual's stern recommendation to stay with 87. Would 89 be allright, then?

2. Also, several of you recommended switching to the Autolite spark plugs which burn cooler. Would this have any other impacts on the engine? or performance? (is it fairly easy to replace the sparks on a 3.9?)

3. Same question as #2 concerning the cooler thermastat. (easy to replace, too?)

Thanks,
John




Marc
Dodge Dakota
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12/11/2002
15:53:29

RE: Spark plug knock cure
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Message:
Answers:
Q1-YES
Q2-NO, actually better for engine.
Q3-Not sure, still have stock thermostat but i would imagine a slight drop in MPG with a 180deg.



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