Miata Clack Sound when revving
#1
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Miata Clack Sound when revving
So I been trying to track down this loud clack. Ignore the HLA I just serviced them thinking that was the sound and it was not. Any help is always appreciated.
EDIT. Forgot to add compression 190 on all cylinders and afrs the same no lack in power. When the car cools I'm going to check for anything loose sound louder on passenger
EDIT. Forgot to add compression 190 on all cylinders and afrs the same no lack in power. When the car cools I'm going to check for anything loose sound louder on passenger
Last edited by ScottyP3821; 04-22-2014 at 10:59 PM.
#3
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Ok well I unplugged the number two cop and revved and the clack was gone. A cycled through the rest and it's only on number two. I'll try fixing the video. But does this mean I spun a bearing?
#6
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That's what I would think too but another guy on Miata.net said that was a way to test for a spun bearing. Hmmm I'm so confused idk know what to check next but really don't want to pull apart the motor. I wonder if the valves are mess up? I'd imagine if it was I'd have bad compression.
#7
Maybe put the number one cop in cylinder two and leave number one unplugged? Should rule out any strange ign issue. If toyota cops I have had a few fail on me. Judging by the noise, I highly doubt that will do anything but this doesn't sound like a spun bearing to me so would look for a something else.
#9
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Maybe put the number one cop in cylinder two and leave number one unplugged? Should rule out any strange ign issue. If toyota cops I have had a few fail on me. Judging by the noise, I highly doubt that will do anything but this doesn't sound like a spun bearing to me so would look for a something else.
I switched cops and still had the same sound on number 2. Unless I removed spark from the cyl
#11
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Sounds like rod knock to me. Well, piston damage, piston ring damage, bearing damage, and/or rod knock on #2. Wouldn't be too surprised if you could rock piston #2 back and forth. With the head off.