<VV> Re: squealy squeak

[djtcz at comcast.net]

At 03:24 AM 7/3/2005 -0700, tom zimmermann wrote:
>Ron,it sounds a lot like a valve problem,at worst a broken guide;;;wrong 
>rocker arm,from another engine,will push the valve stem sideways and break 
>the guide;;a plugged pushrod that's not oiling the rocker,a bent one 
>that's rubbing on the guide plate (or a backwards guideplate),a bad 
>rocker/ball,,also look in pushrod tube for a piece of debris,and possibly 
>a bent rocker stud...slip a 90* elbow on the Y-pipe,run the muffler out 
>sideways;;;then pull the valve cover off,take BOTH #1 rockers off,and 
>start the engine...make sure all of the keepers are holding the valve stem 
>at the retainer,causing the spring to 'cock',or lodging itself 
>elsewhere...a broken inner damper spring is harder to detect....Tom Z/had 
>ALL of the above problems..

I've had 1 or 2 rockers fail.  They started as chirp----chirp----chirp since each rocker.
If the squeal is more or less constant I'd suspect an exhaust or even intake leak playing a gasket like a saxophone reed, or puffing over/through a tiny hole like a flute or whistle.
If it's an exhaust thing A shop rag stuffed hard over the exhaust outlet should change the sound and even eventually shut off the engine with a tight system.