2002 Mazda Protege '02 Protege lacks power and has spark-kn

2002 MAZDA PROTEGE
80,000 MILES • 4 CYL • 2WD • MANUAL
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QUEBIT
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My '02 Protege has recently developed some noticable spark-knock and seems to have lost a fair amount of power. This has been going on for about 6 weeks now. Any suggestions?
Jul 25, 2008 at 12:26 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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