Question about 2004 Ford Focus

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Real loud knocking noise when starting

My neighbor has a 2001 Ford Focus and when she tries to start it a loud knocking noise seems to be coming from the top side of the engine. Also you can see the engine shaking more than normal during that time. It seem like the car wants to start but struggles and dies out. It also sounds like there is something metal bouncing around in the top of the engine. Any ideas? Thanks!

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  • Anonymous Mar 26, 2014

    I started my 2000 ford focus and I heard a loud banging noise like if it was out of oil but it didn't want to move forward and the engine was shaking

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This can be a serious problem, sounds like one of your engine valves, has the car overheated recently? if your valves bent, you need to take the engine apart hope i helped

Posted on Jul 27, 2009

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Posted on Jan 02, 2017

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SOURCE: Loud engine knocking on 2001 Ford Focus

Sounds to me like a very common problem has occured to your neighbor. If this is a SOHC engine, one of the valve seats in the number 4 cylinder has fallen out. I'm sure it has damaged the head and the piston. Stop trying to run it or you might blow a hole in the cylinder wall or break a rod or both.

Posted on Aug 07, 2009

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Sounds to me like a very common problem has occured to your neighbor. If this is a SOHC engine, one of the valve seats in the number 4 cylinder has fallen out. I'm sure it has damaged the head and the piston. Stop trying to run it or you might blow a hole in the cylinder wall or break a rod or both.

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