Noise in engine

[Kim K Kaiser]

Hey all,  the noise im lonking here comes and goes.  Its not normally at startup, kind of shows after abput 10 minutes  and most hearable at idle.  Last i was hraering it when it was really hot out, but it went away.  I believe the heat out was causing a vapor problem.  I took car out in hi 80s for abput 40 minute ride, got to desination.   Car never went over 1/3 on temp gauge, thought i was good,  Got out, went in for about 2o min and car wouldnt start.  Fuel in bowl was sbout an eighth high. Being 40 min from home, i panicked, got on internet searched vapor lock and found i could try and pour cold water on fuel pump, lines to try and drop temp.   After about ten minutes of pouring on pump and lines, it started!  Got home no prob.  Outsode temp had dropped to 70s.

The "noise" had not been around for a week or two,  then today, back again.  

Rrason i explained above was for recent driving for reference.

Here is the noise. It was dark out when i took it, seems more toward back of engine.  Any thoughts here

Thanks for listening

https://youtu.be/a8CsUlxv5IE

[Kim K Kaiser]

Well i think i got it figured,  it was pointed out the notch on the end of shaft not pointed in right dirction. So had to flip it back, reset the arms, and result was oil flowing up and out of top of rocker arm, down the spine, onto springs,   the squuek was not present at all.

https://youtu.be/bv_I6hi4jDY

Thanks to all who helped me out.  Learn something new everytime i fiddle w this thing

[Jason Edge]

Congrats on the fix. I had assumed rocker arm shaft assemblies were installed correctly...especially after all the discussion we had prior about following the shop manual (in pariticular rocker arm installation on section 13.8, page 9-17 in shop manual) and the fact they had to be installed correctly. I pretty much always get things wrong when I assume these days. Not sure how many miles were on the engine with rocker arm shaft on backwards but hopefully no damage done. Regardless, fire it up and go enjoy a ride in the Caddy!