4.3 throttle dependent squeal - not belt related

[ShoalSurvivor]

This is the first run after replacing front and rear seals, water pump and alternator, on my 4.3.
I tested the belt tensions and tried the water spray test, then isolated the pulleys - no issues.
Finally, I removed the belt and started it just to verify and the squeal continues.

Sounds like it's coming from the front seal and because it's new, I suspect it's the culprit.

Is this common? I'm *pretty* sure it was lightly greased when I installed the new cover, and my understanding is that they are self lubricating.

Should I let it run and hope it lubes itself, or am I gonna ruin my new seal running it?
Should I attempt to lube it from the front with the balancer on.

I really, really, really don't wanna pull the engine again

Thanks.

 

[ShoalSurvivor]

Here's a couple videos - first demonstrates the squeal with change in throttle. Second shows a unique sound during shut down. Hope one of you experts can point me in the right direction from that sound, alone.
thanks,
View attachment IMG_4885.MOV

 

[ShoalSurvivor]

Picked up a stethoscope. squeal strongest at front base of carburator and electric choke. Disconnected choke, no change. Sounds like it’s either inside the carb or under it. Puzzled.

no indication of it coming from seal or front or drive shaft. Not valve covers or any belt components.

clear indication at base of carb.

bueller? bueller?

 

[ShoalSurvivor]

RESOLVED.
that was a lotta squeal caused by carb bolts not properly torqued.
I remember now a couple days ago when reinstalling and redressing the engine.. lots of components, lots of bolts and nuts. I said to myself … don’t forget to come back and torque these down, but I don’t always listen to myself.

running beautifully now.