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Rattletrap... 120-130 1967

posted by  Ron Kwas on  Mon Apr 18 10:54 CST 2005
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last visit: Fri Oct 24 04:03 CST 2014
[RELATED]

Jeff;

PCV valves (located just above the oil trap) like to rattle when the idle RPMs equal the mechanical resonance of the valves' shuttle...I wouldn't worry about it too much unless it really bothers you...or you could clean the valve insides with carb cleaner...the mass change alone might change its resonance point enough...or just adjust the idle Rs a bit...it's typically a very tight match which causes the rattle...

Cheers






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