1970 Chevrolet Nova Loud Ticking

GMC
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KMELTZ
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  • 1 POST
I have a 1970 nova, with an 85' 350 and 71' Corvette heads, as of about 2 weeks ago I started hearing a loud ticking noise, and when you press the gas at idle the noise gets faster and then dies back down with the idle.. I thought it was the valve springs, so I just put all new valve seals, retainers, and springs... Still making the same noise??? Any idea what it could be/?
Apr 8, 2006 at 10:30 AM
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KENB79764
  • ✓Experienced Mechanic
  • 52 POSTS
sounds like you have a bad lifter or valve lash out of adjustment on one valve. i would lean towards the lifter since you did the valve springs.
Apr 9, 2006 at 2:01 AM
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Suggested Repair

Inspect for a bad lifter or incorrect valve lash on one valve. The expert leans toward a bad lifter because the valve springs, seals, and retainers were already replaced.

Conversation Summary

The owner of a 1970 Nova with an 1985 350 and 1971 Corvette heads reported a loud ticking from the right cylinder head that speeds up with throttle and returns with idle. New valve seals, retainers, and springs did not stop it. The expert said it sounds like a bad lifter or valve lash out of adjustment, leaning toward the lifter.

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