Quick and easy guide to changing the spark plugs and ignition coils on a Renault Megane 05 plate 1.6 petrol engine.
I am by no means a mechanic and am purely self taught through research and just giving it a go.
I thought I'd share my experience, yours may vary, but this fixed my problem.
The car suffered from lack of power and chugging when low revs and the 'Toxic Fume Warning Light' appeared on the dash.
The Internet provided me with enough knowledge to help me decide to give it a go myself, saving £££ on garage labour.
Hope this helps others in turn!
I did not need to replace all the plugs and coils at once, I could have done them 1 at a time to find out which ones where causing the problem, however, I knew if I changed all of them I would have peace of mind that they were all new and shouldn't cause an issue for a long time(touch wood!!)
This cost me just under £100 and took me about 20mins to complete.
... Engine was off and cold when doing this. Please be safe.
Step 1: Parts and Tools
-replacement spark plugs
- 10mm socket (+small extension)
- Spark plug removal tool or long reach socket bar (with specific plug diameter socket)
- Telescopic magnetic (much advised)
Step 2: Remove Engine Cover
Step 3: Locate Ignition Coils
Step 4: Remove Coils
Once removed, the coils will just pull out.
Step 5: Remove Spark Plugs
They may be a bit stiff to turn at first, but eventually they'll losen. Again, an extendable pen style magnet helps remove the plugs if they don't come out still in the socket.
Step 6: Insert New Plugs and Coils
Makesure to line up the bolt hole.
Remember to replace the 10mm bolts and finally connect the cables back on to the coil which it was removed from.
Step 7: Finish
Remove all old parts and tools from the engine bay.
Turn ignition on and check if any warning lights come on.
Start the engine.
This worked for me and the engine sounded good as new straight away. No dip in revs or lack of power.
Keep the old plugs and ignition coils as spare, just incase.
Thanks for reading, hope this can help a fellow novice :)