Chirping noise
#3
Safety Car
After watching and listening to the vid it sounds like a kind of vacuum or exhaust manifold leak
#4
Melting Slicks
Start by eliminating all the belt and tensioner possibilities people will suggest, but I think you have a bad valve lifter causing the chirping noise.
#5
Le Mans Master
It does sound like a lifter roller, though I would expect to see elevated iron in your oil analysis from cam lobe erosion. How long has this noise been going on?
#8
Race Director
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My car had it for several years before I sold her - never had any issue - I pinned it down to the alternator (guestimate) but it never ended up failing me. Bottom line is that I would not worry about it IMHO.
#10
Could be many items:
Belts (take them off one at a time and see if it disappears)
Harmonic balance (or belt) - Many vette enthusiasts swear by Gatorback belts
Pulleys / tensioners
Hope this helps
Belts (take them off one at a time and see if it disappears)
Harmonic balance (or belt) - Many vette enthusiasts swear by Gatorback belts
Pulleys / tensioners
Hope this helps
Last edited by csc67; 04-16-2019 at 07:10 PM.
#11
Worst case, it could be a lifter that has failed. Its happened to me. If it is, don't run the engine. While its running its grinding on the cam. Heads have to come off to replace
#12
Melting Slicks
And the camshaft replaced even if it's slightly scored, at a minimum. Engine will have to be inspected for further damage if metal is found elsewhere, Good idea is to have the oil filter removed and cut open for inspection of the filtering pleats.