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This engine has an aluminum cylinder block, an open cooling jacket, cast iron cylinder liners. There are no repair dimensions for the cylinder-piston group. There is an aluminum pallet. The timing belt uses a toothed belt that drives two camshafts, there are no hydraulic lifters in this engine. Apparently, this is a greeting from Yamaha, which helped develop this engine.
It is a reliable and completely non-whimsical engine that can easily cover 400,000 kilometers with timely maintenance. Today we will pay attention to its few weak points and important features. The alternators on many Ford vehicles have proven to be short-lived. Many generators survived the warranty period and then broke down.
After checking the faulty generator, various reasons for their failure are found out:torn off "masses", a broken diode bridge, as well as worn out brushes. There is also a Ford-specific malfunction of the special generator control unit. If the generator is faulty, then in many cases the battery does not run at all, or the charging voltage is too high. The generator lends itself well to repair.
The fuel pump on the Ford Focus is also not very reliable and causes trouble for the owners. The first signs of problems with the gas pump are jerks during acceleration. Also, the engine does not start well in the heat with a small amount of gasoline. First of all, two filters are clogged in the gas pump. The first coarse filter is a mesh, which is installed on the fuel intake.
And the second fine filter, which is installed in the fuel pump. Both original filters are assembled with a gas pump, but there are already substitutes that can be implanted, that is, replace dirty filters. But such a replacement makes sense if the fuel pump motor is alive. But in most cases, you have to change the fuel pump assembly.