[tmauldin]

Tightened down valve cover without torque wrench on 96 5sfe real tight
In idle When accelerating to 2k it sounds normal weeeee, when get to 2.4k and above it sounds wooooooh

It needs a new timing belt and its tensioner and spring and idler , but was wondering if the valve cover could be contacting the valvetrain causing bounce, or if valves were floating, or this is sound of worn rings or crank bearing area play

 

[Cosmofennema]

Replace the timing components and then ring us back. That's the noise the tensioners make when they're on the way out.

 

[tmauldin]

I thought it was a separate sound since it sounded like origin was from inside block or head, guess it could vibrate that far
But the cold start noise at front of engine is really loud and as engine warms up ,I guess grease in bearings does too and flows easier, noise quietens , so you wouldnt be able to hear it as much until putting rpm higher, so it should be extra loud at cold start and putting rpm higher (even louder than if

 

[tmauldin]

I thought it was a separate sound since it sounded like origin was from inside block or head, guess it could vibrate that far
But the cold start noise at front of engine is really loud and as engine warms up ,I guess grease in bearings does too and flows easier, noise quietens , so you wouldnt be able to hear it as much until putting rpm higher, so it should be extra loud at cold engine (even louder than if engine warm) and putting rpm higher
Maybe that as a test can verify its 5. Rotational Motion and not the crank bearing area (if it has enough oil of course), and the rings being worn wouldnt be a factor anyways(dont know why said it would), so it would verify its the valvetrain ( takes a few minutes to lube) or front of engine looseness and or bearing

Could it not be any bearing on front of engine such as power steering, alternator, ac compressor , water pump , oil pump or do they make more of a rattle noise when running ( ac compressor only if its turned on) that would not vibrate as far (noise will be isolated to component , use stethoscope to test) and actually quieten up as rpm gets higher and for long enough

So test tightness with belt tension tool and check bearing with dial indicator for up down play and for face wobble also spin bearing by hand to see if it spins so so easy or if it binds, how would you check valvetrain ( vacuum gauge)( and you would notice a misfire and have misfire code) and that noise would eventually stop
Had to edit