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  • November 23, 2024, 09:16:24 PM

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Author Topic: Engine whine  (Read 3347 times)

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Offline drock87

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Engine whine
« on: March 23, 2017, 11:09:12 AM »
So lately, my car has been making a "whine" sound from the engine. It is louder when cold, but never completely goes away. I am paranoid it is a bearing spun somewhere, but there is no knocking or any of that sort. I did advance my timing recently, but I haven't experienced any pinging that I am aware of. Thoughts???
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Offline vangremlin

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Re: Engine whine
« Reply #1 on: March 23, 2017, 04:22:03 PM »
Does the whine vary with RPM?  I've got a whine in my engine, I'm pretty certain it is a vacuum leak that I haven't been able to track down yet. 
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Offline drock87

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Re: Engine whine
« Reply #2 on: March 23, 2017, 05:19:26 PM »
It does. My big fear is that its a bearing somewhere only because its a similar sound to my 500SL that turned out to be a spun bearing in the transmission oil pump. That was costly...but then again, its a 500SL.
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My list of my cars/toys (or toys at my disposal!)

1985 AMC Eagle Sportwagon
2017 Mercedes-Benz C300 4Matic
1993 Mercedes-Benz 500SL
2016 Triumph Bonneville
 1962 Cruisers Inc Mahogany Outboard

I like to to tell people my Eagle is like a Ferrari. It's quirky, tempermental, border-line exotic, and something you don't see everyday.  See? Makes perfect sense....

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Offline AMC of Houston

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Re: Engine whine
« Reply #3 on: March 23, 2017, 06:10:12 PM »
Lots of things on the front of the engine that can whine.  Water pump, idler bearings A/C clutch bearing, alternator bearing, P/S pump, etc.   Get a mechanics stethoscope (or use a long screwdriver as one) and try to see exactly what is whining (without getting the screwdriver caught up in anything spinning!!).
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Offline eaglefreek

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Re: Engine whine
« Reply #4 on: March 23, 2017, 07:54:01 PM »
Pull all your belts off and run the engine to rule out any of the accessories or pulleys.
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