How can i get rid of that rattling like pinging noise? Its like a spark knock. I've tried higher octane and a new air filter. Any suggestions?
1999 Contour SE Sport 39,xxx Miles
20% tint, Yokohama AVS tires 205/60/15
Aiwa cd player
1988 Ford F-150 4x4
31/10.50/15 mudders
2 10" Subs, Clarion Cd
Roll pan, bed cover, black outs all 4 corners
5% tint,Dual flowmaster's, K&N filter
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