1986 Chevy Corvette Brakes, Rattling Valves

1986 CHEVROLET CORVETTE
162,000 MILES • V8 • 2WD • MANUAL
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JCDUDLEY
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I have 2 questions. First, I'm hearing a nose in from the brake pedal, sounds like an air leak. It's constant as long as the car is started. Operating the brakes is all manual, no power assist.

Second, I'm hearing the valves rattle a bit usually in 2nd gear and only when I really step on the accelerator. Is this is a function of low octane or something more serious?
Jun 18, 2010 at 9:22 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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