Changing the spark plugs on a Peugeot 205 TU engine

The spark plugs are located at the rear of the engine

under the ignition harnesses (black cables)

To avoid any risk of error, change the spark plugs one by one.

remove the ignition harness by pulling it upwards

Do not pull directly on the wire, take the bundle by its end.

put it aside

clean the spark plug well using a blower

Failing that, a can of computer air can do the trick.

Using the ratchet, extension, universal joint and 16mm spark plug socket, release the spark plug

If the spark plug is tight, move the wrench back and forth, unscrewing and tightening it.

finish unscrewing by hand

remove the spark plug

compare the old spark plug and the new one

Compatibility will be inquired at the time of purchase. Here we see that the new spark plug has 4 electrodes while the old one only has one. It does not matter. The number of electrodes will not affect performance or consumption in any way.

present the candle

There are magnetic sockets that make installation easier.

tighten by hand

There should be no resistance at first. If the spark plug is straining, loosen and try tightening again.

finish tightening with a torque wrench, torque of 28 Nm

present the ignition harness on the spark plug

A thin layer of dielectric grease can be applied to the spark plug.

and press

proceed in the same way for the other 3 candles

Do not hesitate to remove the beams from their support to be able to access the spark plugs, we will put them back in place later