Question about 2001 Ford Focus

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Loud engine knocking on 2001 Ford Focus

My neighbor has a 2001 Ford Focus and when she tries to start it a loud knocking noise is coming from the top of the engine. It also sounds like there is metal bouncing and banging around in the top of the engine. The car seems like it wants to start but struggles and when it does fire up it both the loud knocking and metal pinging continue and the car dies. The engine is also shaking quite well. It sounds like there is something loose or broken getting shot around the cylinders. Any ideas? Thanks for the help.

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  • Anonymous Mar 28, 2014

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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.

Posted on Aug 07, 2009

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Sounds to me like the tappets have either came loose, or 1 or 2 may have broken, this would let the car turn over, but not start.....the loud knocking is usually the big end bearings, but these are located at the bottom of the engine, inside the engine block....so only the cam-shaft and tappets are in the location you mentioned.....tell your friend not to try and start the car anymore,till she has it looked at....or she will do even more serious damage

Posted on Jul 27, 2009

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