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Here's a how too guide for changing spark plugs.
I thought I'd change my spark plugs out at just over 30k. Citroen recommend 40k but i wasnt waiting that long.
The factory standard plug is: NGK PLZKBR7A-G and an upgrade is available: ILZKBR7A-8G
Both types have a preset spark plug gap, you should not need to adjust, however best to check them with a Spark Plug Feeler Gauge.
Tools Needed:- Socket Wrench, Socket.
Time to change:- Approx 15mins.
The Best socket out there for the THP is the Laser (3681) 14mm Bi-Hex (8mm) 3/8"D - Halfords £12.99
This is a Deep/Magnetic socket so you can get at the plug very easily without any fuss.
Best time to do it is when the engine is cold, as you dont want to burn your fingers when handling hot plugs!
1. Open the bonnet and go to the top of the engine. look at your 4 leads that go into the "Coil Packs" these are directly connected to the Spark plugs.
2. Lift the front edge of the cover of the coil pack - it is hinged and the lead going in will move slightly to the front of the engine bay releasing the cable.
3. pull the cables clear of the coil pack.
4. using both hands, put on finger underneath the front lug of the coil pack and with the other hand grip the back of the coil pack. now pull upwards and twist and the same time. you will hear a "pop" sound as the rubber seal is released and the coil pack disconnects from the spark plug.
5. pull the coil pack out, and clean with a rag/tissue to remove any excess dirt.
6. insert your long Laser spark plug socket, by hand, onto the top of the spark plug making sure it is connected fully.
7. place the socket wrench on the top of the socket and in a anti clockwise motion unscrew the spark plug. once it is loose, disconnect the socket wrench and turn the socket by hand. remove he socket with the spark plug attached
8. remove old spark plug from socket, fit new spark plug into the socket. Insert socket into the spark plug hole carefully so not to damage/decrease the size of the spark plug gap on the tip of the plug. make sure socket is centered within the deep hole. once seated, turn clockwise by hand to avoid cross threading the spark plug. once it is hard to turn by hand, place the socket wrench back on and turn clockwise again approx 1/2-1/2 a turn.
As far as I know, no more that 18lb/ft, but then again i've always used my first method for Spark plugs.
9. once spark plug is tightened, press the coil pack back onto the spark plug and push hard to seal it into the hole. connect the cable back on the the coil pack, and closed over the clip to force the cable to connect in again.
10. Repeat for the other Spark plugs.
I checked my old plugs which seemed to be ok, no carbonisation on the tips at all. the gap on all the old plugs however was over 0.90mm. way to big for a clean spark.
Spark plugs are meant to be set by the manufacturer however they can be slightly out.
when i measured my new ones, they were all between 0.70mm and 0.73mm
BTW GSF parts are doing a % discount on all service part at present. I think it is due to run out very soon. I got
Enter GSF25 when ordering on thier web site. http://www.gsfcarparts.com/parts/#Service_Parts
Hope you find this guide of interest.
Here's a how too guide for changing spark plugs.
I thought I'd change my spark plugs out at just over 30k. Citroen recommend 40k but i wasnt waiting that long.
The factory standard plug is: NGK PLZKBR7A-G and an upgrade is available: ILZKBR7A-8G
Both types have a preset spark plug gap, you should not need to adjust, however best to check them with a Spark Plug Feeler Gauge.
Tools Needed:- Socket Wrench, Socket.
Time to change:- Approx 15mins.
The Best socket out there for the THP is the Laser (3681) 14mm Bi-Hex (8mm) 3/8"D - Halfords £12.99
This is a Deep/Magnetic socket so you can get at the plug very easily without any fuss.
Best time to do it is when the engine is cold, as you dont want to burn your fingers when handling hot plugs!
1. Open the bonnet and go to the top of the engine. look at your 4 leads that go into the "Coil Packs" these are directly connected to the Spark plugs.
2. Lift the front edge of the cover of the coil pack - it is hinged and the lead going in will move slightly to the front of the engine bay releasing the cable.
3. pull the cables clear of the coil pack.
4. using both hands, put on finger underneath the front lug of the coil pack and with the other hand grip the back of the coil pack. now pull upwards and twist and the same time. you will hear a "pop" sound as the rubber seal is released and the coil pack disconnects from the spark plug.
5. pull the coil pack out, and clean with a rag/tissue to remove any excess dirt.
6. insert your long Laser spark plug socket, by hand, onto the top of the spark plug making sure it is connected fully.
7. place the socket wrench on the top of the socket and in a anti clockwise motion unscrew the spark plug. once it is loose, disconnect the socket wrench and turn the socket by hand. remove he socket with the spark plug attached
8. remove old spark plug from socket, fit new spark plug into the socket. Insert socket into the spark plug hole carefully so not to damage/decrease the size of the spark plug gap on the tip of the plug. make sure socket is centered within the deep hole. once seated, turn clockwise by hand to avoid cross threading the spark plug. once it is hard to turn by hand, place the socket wrench back on and turn clockwise again approx 1/2-1/2 a turn.
As far as I know, no more that 18lb/ft, but then again i've always used my first method for Spark plugs.
9. once spark plug is tightened, press the coil pack back onto the spark plug and push hard to seal it into the hole. connect the cable back on the the coil pack, and closed over the clip to force the cable to connect in again.
10. Repeat for the other Spark plugs.
I checked my old plugs which seemed to be ok, no carbonisation on the tips at all. the gap on all the old plugs however was over 0.90mm. way to big for a clean spark.
Spark plugs are meant to be set by the manufacturer however they can be slightly out.
when i measured my new ones, they were all between 0.70mm and 0.73mm
BTW GSF parts are doing a % discount on all service part at present. I think it is due to run out very soon. I got
Enter GSF25 when ordering on thier web site. http://www.gsfcarparts.com/parts/#Service_Parts
Hope you find this guide of interest.
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