I don’t have one but I used a long flathead screw driver. Couldn’t really notice anything apparent but it’s very loud and hard to hear since it’s cammed and loud exhaust. I guess I’ll need to raise the front and try to listen from the bottom as best as possible. Was just curious if anyone was pretty sure of what it was. Definitely seems that the 3v have a couple head noises that are consistent. One of my buddy’s thinks it’s a rod knocking but it goes away under acceleration and it’s not a loud power hammer. I don’t know though. Just trying to get some possible help before I start opening anything up.It's definitely rotational. Are you sure it's coming from the rocker covers? It's difficult to tell from the video. Have you tried using a stethoscope to isolate the noise?
If it’s coming from the side, what could it possibly be if it’s more than likely not a rod knock. I’m mechanically inclined although I’m no master mechanic by any stretch of the imagination. I do think when I take the belt off to start the investigation, I’ll start with the pulleys and see if there’s any play or anything obvious.It doesn't sound like rod knock, at least from what I can hear from the video. It's too high pitched and you can hear it from the top easily, plus the noise seems to go away when you accelerate. Put your long screwdriver down on the side of the block and see if you can hear anything.
Good place to start is remove the belts and start it. Just don't run it very long, but you might spin all the pulleys too. It just could be a PS pump, alternator, or A/C compressor and echoing throughout the engine bay. Check the idler and tensioner pulleys too. If there is even the slightest feeling they aren't smooth, i certainly could be a culprit. Also inspect every inch of the belt too. Look for cracks or chunks missing out of the ribs. It's amazing what little things can make sounds that escalate throughout the engine bay.
Man! That sure allows for a bigger timing variance than you would want! Great find!Well found the culprit. I stethoscoped it a while ago and noticed the sound was coming from the center front. After the front end got dug into, the crank sensor sprocket’s keyway was found whored out. Don’t know how this happened but Im having the whole timing set and oil pump replaced (why not since it’s opened) for good measure.
If anyone runs into a similar issue you may have this problem. I hope
this post and video helps anyone out if they find themselves scratching their head like I was before I finally got the chance to have it taken care of.
Man! That sure allows for a bigger timing variance than you would want! Great find!
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