Has anyone got an idea why the valves on my '89 Cutlass rattle when it cold? When it warms up, it is fine. I has been doing it for some time. I just rebuilt the engine, blown head gasket & leaking injector, but the rattle was there before. I just replace the knock sensor. I did't think it would help, because the knock sensor doesn't come into play util the RPMs are above 3000. And the valves rattle under slight acceleration. Thanks in advance for any help.


Jim