Quote:
Originally Posted by Ninjinsky
One thing that might cause such a problem at those very high rpm is a weak or broken valve spring allowing valve bounce. I appreciate this is a hard thing to check especially the inner spring but if it is a high miler it is a "last resort" check if everything external has been double checked and is ok. (Obviously valve bounce won't show on a compression test)
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Would valve springs be that worn with 16,000 miles?
I ordered two used coils and plug wires off eBay last night, so we will see if that might help, too.
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Current vehicles: 2001 Ninja 250, 2007 Honda ST1300, 2013 Mustang GT, 1998 Firebird convertible, 2003 Jeep Grand Cherokee
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