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Was it there before the belt change?
The rattle sounds the same, almost as if gears were out of sync. Thats why i thought it would be the oil pump. My noise seems to go away easier than the one on the video.
Yes, had the noise with no belts attached. Wen running I can feel the vibration in the skirt of the block behind the oil pump. That is where the front bolt for the counter balance shafts is.
Have you run these engines without the counter balance with the oil supply for the unit plugged?
The timing belt is too loose and smacking against the cover, remove the upper cover and run it, the noise will be gone. Tighten the t-belt more
It is worth another shot. Snugged the pulley up as much as possible earlier.
I will try again.
How did it turn out?
I picked up a new set of tensioning springs and idlers last night. I will install them later this morning. It should resolve whether the belt tension is the issue. I will respond as soon as that is completed.
On the tensioner. I take a pry bar and gently push on the metal tab that has the small hole for the spring, to tighten. If you over do it, it'll whine, if you under do it, it'll rattle.
once you are done, throw the upper cover on and run it for a minute, and make sure its quiet before you reassemble it.
New spring, made sure adjuster was all the way out and it is as quiet as could be.
Thanks much for saving me from my typical path of overdoing every project.
I will close the call out.