Most spark plug gaps are 0.8mm, i always use this measurement and havent had problems yet.

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An old trick was to use a cigarette packet and open the flap then measure with the thickness of the cardboard, good simple times eh!
I just do it by sight and have the bendy bit level and straight so from the box and small tap.
You could find the right gap for your fitment and buy some feeler gauges.

 

Sorry i forgot to put i have some feeler gauges and it was just the gap size that i wanted to know.

I noticed some brands say one size and another brand will see another size for the gap. Should i go by the plug makers size or the haynes gap size?

Chris

 

If the manufacturer has a size for your fitment then if it is near as damn it to what Peugeot say the go for that but i wouldn't personally worry too much a long as the gap is pretty close, i think you can only go wrong if the gap is extremely big or small.
Imo

 

Hi

Are the spark plugs 16mm socket type?

Also can anyone suggest best way to remove without taking to much off the area to get to them due to the location

Chris

 

Yes they are 16mm socket type and if you have wobbly socket you shouldnt have to remove much at all

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Cheers,

Was going to purchase this socket Sealey AK6557 Spark Plug Socket 16mm 3/8"Sq Drive Thin Wall | eBay

What do you mean by a wobbly socket LOL

 

I use a halfords professional toolkit, had it years. The sockets wobble a little on then extension bars, comes in very handy.

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Also that socket is very expensive, go to local car shop, will only cost you about £4

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Hi

Picked up one for £5 so got to get the plugs fitted this week at somepoint. is it best just to hand tight them up and not to go to tight

Chris

 

The rule i have lived by is hand tight and half a turn .
If you have a washer on them they are usually crushable by 1mm or so. I expect there will be some sort of torque angle for them but you'll feel it when the plug gets tight.

Oh and hold the spanner square On and turn with 1 hand turning and the other holding the top or you may snap the head off if that makes sense.

 

Yep I understand what u mean about holding it square on with one hand as near as I can to bottom and then turn with other.

Chris

 

are you sure they are 16mm? my halfords pro socket set has a 10mm plug socket and a 14mm one, I can't imagine there being that many variations? Thats a bummer that I won't be able to use my posh new socket set to get the plugs out?

 

I think so I am not sure. My socket I brought fits the new plugs fine without much movement

Chris