Skoda octavia keeps cutting out diagnostic machine cant find fault?

Answer 1

If the vehicle is petrol try checking the coil. You may find that there is an oil leak from the coil soaking the king lead to the centre of the distributor . If this is so both will need replacing.

If the engine is a more modern type where individual coils are used buy one new one and replace them one at a time to see if this helps. remember you may have to replace more than one to solve the problem.

Another thing worth checking is a fuel filter or one way valve close to the fuel tank this may be partially blocked if this is so drain and clean out the fuel tank in situ and use air line to clean filter or valve before replacing. Another thing may well be the fuel pump if the top can be removed do so carefully remove parts one at a time and using an air line blow them clean as you can get a almost invisible skin form over the parts making them less efficient. If none of this works you have to inspect the fuel system from the filler cap on the tank to the entry point in the engine block.

Then you have to repeat this procedure with the electrical parts of the ignition system starting at the battery. Try checking simple things like loose battery terminals , the earth strap from the engine block. check for loose connections corrosion etc.

Remember if diagnostics cant find the fault the problem is not serious the answer is a simple fault like a minor fuel blockage or a loose wire high tension leads should be replaced about every five years you would be amazed at what a difference this alone can make to a car getting a bit tired. When a vehicle is on a machine it is in a nice warm dry garage. when the fault occurs it on the road the whole vehicle is vibrating and driving in various weather conditions. This answer is specific to any vehicle not just skoda