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Old 03-22-2013, 11:31 PM
MRKoby MRKoby is offline
Ranger XLT
Join Date: Oct 2011
Posts: 52
Default Re: Spark Knock ?

1994 Ranger XLT, 4.0, 5 speed. I drove it of the lot of Sierra Ford in Duarte, CA in 1994 with only 14 miles on it. 300,000+miles and running good....
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Old 03-24-2013, 10:15 AM
damascus smith damascus smith is offline
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Join Date: Jun 2011
Posts: 48
Default Re: Spark Knock ?

.054" for the new ones. I didn't check the old plugs I took out. But there was no change before or after the new set.
2002 XLT ext. cab, 4x4, 4.0L, auto
Owned a 95 for 18 years from new
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Old 03-25-2013, 08:05 PM
utvol utvol is offline
Ford Ranger Owner
Join Date: Oct 2011
Posts: 64
Default Spark Knock ?

What octane fuel are you running? Mine seems to spark knock with 87 & more when The temperature is hot outside &/or my truck has been running for an extended period. Been running 93 & sometimes 89 & it hasn't been back.

*nevermind. I saw where you had tried that.

Last edited by utvol; 03-25-2013 at 08:08 PM.
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