08-23-2011 | #1 |
Join Date: Jun 2007
Location: Pensacola, Florida
Posts: 14
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1991 zr1
I have 1991 zr1. It has 19000 miles. It has developed a knocking noise after ir runs about 15 minutes. Mechanic said it was running on 7 cylinders. Could be plug wires or injectors. Any comments are suggestions?
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