D7F engine reliability: strengths, watch-outs, and known issues

This is a fairly reliable engine, but on forums people most often complain about its noisy operation. It is especially annoying when driving at high speeds and essentially nothing can be done. Sometimes adjusting the valve clearance helps reduce the noise a bit; for this you need to remove the intake manifold, valve cover and replace their gaskets.

Another known weak point of this engine is the low service life of the timing belt. According to European regulations, its replacement is only required every 120,000 km, but it often breaks earlier and often with valve bending. Replace it every 60,000 km.

From the factory, an ignition coil combined with high-voltage wires is installed here, which often break down or simply break, and it is quite expensive. The problem became irrelevant as soon as a coil with separate wires appeared.

On the specialized forum there are many complaints about oil leaks from under the valve cover. The cause is often overtightening of its bolts, so it is better to lubricate them with sealant.

After 250,000 km, oil consumption often occurs due to wear of rings or valve guides, and the main problem is that it is very difficult to find repair parts for overhaul. Also, the fuel pump and auxiliary equipment have a rather modest service life.