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Old 03-07-2004, 12:13 AM   #1
Scooby Newbie
Member#: 7140
Join Date: Jun 2001
Location: louisville, ky, usa
2009 WRX
satin white pearl

Question loose spark plugs -- what could happen??

this question isn't about my wrx..in fact, it's in regard to a 1996 Ford F-150. today, i did a plug/plug wires/distributor replacement...in the process, i discovered that the number 2 plug was cross threaded, and the 3rd and 6th plugs were loose...in other words, i could unscrew the plug with my bare hand. a) what would a loose plug do to a car's drivability? b) when i replaced the cross threaded plug, the new plug was cross threaded as well. what i mean by this is that it wasn't fully seated onto the cylinder head...what will this do...if anything?

feedback welcome...

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Old 03-07-2004, 02:34 AM   #2
Scooby Newbie
Member#: 47597
Join Date: Nov 2003
Location: Vermont
1997 ///M3
'93 Impreza


reduce compression and thats about it. Probly make it run at 100%.

Do you allways torque them down?
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