Valve Seat Problem - The most common problem with the CVH is the tendency to drop a valve seat,[1] which most often happens in the 2000-2004 Ford Focus sedan with the 2.0L CVH/SPI engine. These engines usually drop a valve seat with no warning, for no reason, even if the engine has been well maintained. With most dropped valve seat cases, a seat drops on the number 4 cylinder, with the next most common being the number 2 cylinder. With the factory valve seats, the typical life of the 2.0L SPI in a Focus is about 100-120k miles,[2] but it can happen as early as 70k miles. When the valve seat drops out of the cylinder head, it falls into the cylinder and mashes up the piston and cylinder head. In some cases, the valve seat will exit the cylinder it dropped in and be sucked into other cylinders via the intake manifold until it's obliterated. A valve seat dropping into the cylinder can, and sometimes will, scar the cylinder wall up and bend the piston connecting rods. When repairing an SPI with a dropped valve seat, it is very important to remove the intake manifold and have it thoroughly cleaned before bolting it up to a new cylinder head. If not cleaned, trapped particles in the manifold from the dropped valve seat will enter the repaired engine and scar the cylinder walls and sometimes ruin the new cylinder head. The best solution for avoiding the dropped valve seat problem is to purchase and install a new cylinder head that has had the valve seat problem fixed.
Oh man, what a bummer. Just bought this car in July 2013 for about $2,000. I bought it knowing the timing belt had never been replaced, so I did as much a couple of months later. I also did the brakes. Always ran well; no problems as many will tell you. Drove it to work like any other day, but when I got into my car to leave... nope. CLANK CLANK CLANK. I knew it was pretty awful. Got it towed and was told about this common engine defect. What a massive pain. The quote with the tow and diagnostic ran up $2,300. Not sure if it's worth replacing...
I am really getting sick of ford and their penny pinching systematic fatal vehicle flaws. I broke 2 headbolt getting the head off this car, the rod bearings were badly worn, the valve seat fell out and demolished the number 4 piston and the engine head. You have to buy a full set of piston, if you want a new piston. If I was a ford Mechanic, I would have a hard time facing my customers with tales of broken studs and overpriced repairs. This is the last ford I will ever let a customer buy used, when I will be doing the repairs in future. Ford really has slipped quality when I would prefer my customers buy a Hyundai than a ford
Ford need to find the designer and his boss who designed this aspect of the engine and fire them with no pension. This problem can be avoided with good design practices.
Ran smoothly yesterday. Leave for work today: turn key and hear engine turning then a louder, rougher, banging sound accompanied by vibrations through the whole car. Will not start. After 5th crank (this time with an experienced car enthusiast looking under the hood) confirm there is an object between the cylinder and head by sound and feel. Final diagnosis pending but there is definitely an object between cylinder and head.
Car is dead - not remotely worth the cost to replace the engine. I just put $750 into it to fix other lesser mechanical problems: what a money suck.
It started with the engine stuttering when starting, especially if the car was pointed down hill. It would smooth out, run fine. Never lost a drop of oil, no smoke whatsoever. Actually, the car never ran better! My son took it shopping, was parked on a very slight downhill slope, It studderd then CLANG CLANK CLANG! Towed it back, and the #4 piston hit the spark plug so hard that it flattened it and even broke the ceramic. Thinking about changing the motor if we can find one with low enough miles.
I have fallen victim to what seems to be a well documented and common problem with the 2.0L I4 SOCH escort motor. The intake valve seat in cylinder number 4 has broken apart into about 6 1/8 inch or so pieces falling into the cylinder then subsequently getting mashed in between the head and piston. Damage caused from failure as follows: Cracked piston, bent connecting rod, cracked cylinder wall, mechanical damage to combustion chamber on cylinder head. Not happy with this at all and Ford refuses to do anything about it, even though it is clearly a defect in the manufacturing process.
A D V E R T I S E M E N T S
Oh man, what a bummer. Just bought this car in July 2013 for about $2,000. I bought it knowing the timing belt had never been replaced, so I did as much a couple of months later. I also did the brakes. Always ran well; no problems as many will tell you. Drove it to work like any other day, but when I got into my car to leave... nope. CLANK CLANK CLANK. I knew it was pretty awful. Got it towed and was told about this common engine defect. What a massive pain. The quote with the tow and diagnostic ran up $2,300. Not sure if it's worth replacing...
- Jay G., Beaverton, OR, US