My peugeot 206 1.4 petrol is only firing on 3 cylinders need to check the sparks not sure how, please can you help.

kate botha, April 2008

take it to the garage.mine only cost 23quid

alan, November 2009

I assume (hope) that the guy above meant to say that you should disconnect the NEGATIVE connector on the battery.

All modern cars are 'negative earth', which means that the metal of the bodywork is connected to the negative pole of the battery.
If you disconnect the positive connector, and something accidentally touches the positive terminal and any part of the bodywork (if you dropped a tool for instance) then it would short out the battery, which is very dangerous!

james, May 2008

Answer

Disconnect the battery by removing the positive connector. Using a 10mm spanner or long socket remove the two studs with nuts attached on the coil pack which is located at the top back of the engine. Unclip the hose that connects to the rocker case cover and air intake hose and move it aside. Pull the coil pack out and move to aside the right. You may have to disconnect the plug adaptor, but you should be able to get away with leaving it to the right. Using a suitable size spark plug socket (cant remember the size) and a flexi extension bar and rachet or tommey bar undo each socket and replace with an appropriate new spark plugs. Reassemble in reservse order of the above. Hope this helps!

Mal

m snape, April 2008