Engine knock/rattle - Ford Mustang Forum
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post #1 of 3 (permalink) Old 03-18-2019 Thread Starter
Westfall2000's Avatar
Joined: Mar 2019
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Engine knock/rattle

My 2000 gt has been making a clicking/knocking sound for a good while now. The noise is coming from the passenger side of the engine and only starts when the motor gets warm. The knocking really gets loud after about 2-3k rpms. I have taken it to several mechanics and one said he thought a rocker was bumping. Another mechanic put in thicker oil to try to get it to stop but that did nothing. I have very little experience working on cars and I am fairly tight on money. Do I have any choice but to pay someone to take the engine apart and figure things out? Any advice or tips would be greatly appreciated because I fell in love with the way my car used to sound. Thanks.

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post #2 of 3 (permalink) Old 03-18-2019
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If you're getting a hollow sounding knock, it might be coming from the crankshaft. A metallic rattle would most likely be top end. When it rattles at idle, put a long screwdriver against your ear and touch it along different spots close to the valve cover. If the rattle gets louder, you might have a worn/loose rocker. Or you could pull that valve cover and check for signs of a loose/worn rocker.

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post #3 of 3 (permalink) Old 03-20-2019 Thread Starter
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Joined: Mar 2019
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Thanks for the advice, I'll give the screwdriver thing a shot. I just changed the oil and what came out of the drain bolt was only 3 liters of deep black oil. I find this alarming because the oil was changed less than 1k miles ago. The car isnt leaking any oil and only has 56k miles so i feel like itd be odd if it was burning that much oil. Is this maybe related to the noise? Also a metallic rattle is a perfect way to describe the noise. What are the signs of a bad rocker and how hard would it be to replace or fix? Thanks again.
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