Join Date: Mar 2010
Location: Stoney Creek, Ontario
Champion spark plugs? In a Ford? Not bashing, just asking. I did that once and soon came to regret it. Champion is not what it used to be. That being said, I would start looking for a vacuum leak and check fuel pressure. Maybe, the idle speed air valve could be dirty or mass air flow sensor. Hopefully, the lifters didn't collapse or crack a valve. Not everything will generate a code. Bad plugs or compression loss should set cylinder imbalance. A vacuum leak may set a code indicating air in not matching air out. Start simple. Make sure there are no restrictions, stuff is reasonbly clean, check vacuum, fuel pressure and timing. Check the coils. Make sure they're on tight. Spray some WD-40 on them to see if there is a change while running. This may sound stupid but check your belt(s) and pulley's and fan, if you have a mechanical fan. Make sure all the blades are there.
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The Past - 1976 F-350 Crew Cab 1992 - 2006 RIP
The Past - 1995 F-150 XL Enforcer All Gear Drive 2008 - 2015
The Present - 1993 F-250 XLT Turbo Diesel Super Cab 4x4 2015 - ?
The Future - Who knows?