Sad day - North American Motoring

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Sad day

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Old 07-11-2018, 05:14 PM
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Sad day

So today I started hearing this knocking noise. I take good care of my 2011 MCS, donít beat on it, on top of the oil changes and maintenance. This has got me worried though. Only has about 32,000 miles. As soon as I figure out a way to link the vid I will add it.
 
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Old 07-11-2018, 05:54 PM
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Damn, canít upload my vid to photobucket
 
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Old 07-11-2018, 07:29 PM
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Still trying to find a host for my vid to be linked to. Canít add it here from my phone.
This knocking sound also asscociated with the rpms. At idle itís a slow knock, when I accelerate it gets faster. It was fine a few days ago. Any ideas guys?
 
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Old 07-12-2018, 04:06 AM
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Hopefully it's not the timing chain, or worse yet, a connecting rod or piston.
 
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Old 07-12-2018, 05:08 AM
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Thatís what Iím afraid it is. Heard that noise before on a few other cars. I did my valve cover gasket a few weeks ago and the timing belt guide looked ok, no cracks or missing pieces.
I have to look for my warranty see if itís up. If so Iím gonna have to bite the bullet and take it in.
 
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Old 07-12-2018, 05:17 AM
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Letís see if this link works
you can hear it sometimes through the background noise. I know we have loud valves in the mini but this klacking noise is new.
 
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Old 07-12-2018, 09:11 AM
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I saw a case where the serpentine belt was chipped from inside...Get a good visual on the belt and rotate the crankshaft CLOCKWISE and see the condition of the belt
 
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Old 07-12-2018, 09:20 AM
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Drain the oil, look for metal particles.
 
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Old 07-13-2018, 02:01 PM
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Maybe clogged intake valve causing the loud knock? I poured a bottle of seafoam down the pvc hose and the car is MUCH quieter and no longer knocks. If you do it keep the RPMs at 2000 while adding.
 
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Old 08-11-2018, 12:01 PM
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Had a mechanic buddy listen. He says possible main bearing on left side of engine ???
 
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Old 08-11-2018, 12:37 PM
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Disconnect the brake vacuum connection and put your finger into the vacuum pump where you disconnect the fitting connection, the noise and the engine should be quiet, if it is then the vacuum pump needs to replace.
Good luck.
 

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Old 08-23-2018, 01:05 PM
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So the diagnosis is that theres a tensioner that has bad bearings and that was binding and causing the banging noise. They will change the serpentine belt, the tensioner, oil pan gasket because of a slight leak. Will cost me $525. Just worried these guys will flash my ecu and erase my tune. Worse yet, take her out for a test drive and get stupid with it.
 
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Old 08-23-2018, 01:08 PM
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Sounds like you got off cheap and dodged a bullet!!! Sounds like the serpentine belt tensioner... Good luck.
 
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