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Jun 14th, 2026
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Joined: Feb 2023
Posts: 23
New to Talk Morgan
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New to Talk Morgan
Joined: Feb 2023
Posts: 23 |
Hi Sewin - Thanks for your reply - The red bit is the bit surrounding the iridium electrode. Thanks for your info theough - all noted and very handy to be aware of.
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Joined: Feb 2023
Posts: 23
New to Talk Morgan
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New to Talk Morgan
Joined: Feb 2023
Posts: 23 |
TBM - Many thanks - That is reassuring!
Cheers
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Joined: Feb 2016
Posts: 8,667 Likes: 408
Needs to Get Out More!
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Needs to Get Out More!
Joined: Feb 2016
Posts: 8,667 Likes: 408 |
Yes your NGK ITR6F13 plugs are laser iridium. More info here. They appear to be an NGK recommended upgrade for Focus 2.0 Mk 2 2004-2011 among others. Below is probably the best pic of those you linked to. ![[Linked Image]](https://i.imgur.com/ykIuKXJ.jpg) I agree with others that the red insulator colour is likely down to fuel additives. My colour chart matches to use of lead replacement petrol but otherwise normal.
Richard
2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone
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Joined: Feb 2023
Posts: 23
New to Talk Morgan
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New to Talk Morgan
Joined: Feb 2023
Posts: 23 |
Thanks Richard. How did you get the picture to upload? I kept getting a message saying that the image was too big!
I'm pretty suer the gap is greater than 1mm ( as per previous post on this thread) I've not measured it but have no reason to assume it has been squeezed down from the original 1.3mm Is that likely to make much of a difference - the car feels like its running well...
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Joined: Jan 2010
Posts: 1,912 Likes: 93
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Jan 2010
Posts: 1,912 Likes: 93 |
….How did you get the picture to upload? I kept getting a message saying that the image was too big!.... The quick answer is that this forum is not the best place to upload images. If you look at this page, it will give you instructions about a TM option - https://www.tm-img.com/page/ifu
Last edited by Jon G4LJW; 10/07/23 05:32 PM.
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Joined: Nov 2015
Posts: 8,671 Likes: 489
Just barreling along Needs to Get Out More!
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Just barreling along Needs to Get Out More!
Joined: Nov 2015
Posts: 8,671 Likes: 489 |
The OE plugs would have been Motorcraft so it's on it's second set at least, visually the gap looks a bit large which will stress the Coil Pack
Jon M
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Joined: Feb 2016
Posts: 8,667 Likes: 408
Needs to Get Out More!
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Needs to Get Out More!
Joined: Feb 2016
Posts: 8,667 Likes: 408 |
Thanks Richard. How did you get the picture to upload? I kept getting a message saying that the image was too big!
I'm pretty suer the gap is greater than 1mm ( as per previous post on this thread) I've not measured it but have no reason to assume it has been squeezed down from the original 1.3mm Is that likely to make much of a difference - the car feels like its running well... I had to resort to some cunning and host the picture myself after grabbing a screenshot. You need a host that will provide you with a direct picture link then use the picture icon whilst making post. I use Imgur which is free and tolerant of any picture I upload irrespective of file size since it reduces automatically. Regarding plug gap, I would reduce to 1mm as suggested or 40 thou if you have imperial feeler gauge.
Richard
2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone
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Joined: Jun 2020
Posts: 488 Likes: 27
Learner Plates Off!
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Learner Plates Off!
Joined: Jun 2020
Posts: 488 Likes: 27 |
I can't seem to find, or should I say, feel confident that I know which spark plug I should be ordering for a 1.6 Sigma engine. Any pointers and/or recommendation on what brand is recommended and/or part number?
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Joined: Jun 2015
Posts: 2,086 Likes: 70
Talk Morgan Expert
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Talk Morgan Expert
Joined: Jun 2015
Posts: 2,086 Likes: 70 |
Why not simply remove an existing plug and see what it is from the writing on the insulator?
If purchasing online, beware of the many fakes that exist, which may look perfectly normal right down to packaging. One test for this might be the price; I have seen sets of 4 NGK plugs for £40+ but also the “same” thing for around a tenner. If unsure, best to stick to reputable dealers/suppliers.
Doug
2011 Plus 4 in Rich Maroon
1972 750 “ComDom” sprinter
1958 Triton 650
1992 Triumph Trophy 900
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Joined: Feb 2016
Posts: 8,667 Likes: 408
Needs to Get Out More!
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Needs to Get Out More!
Joined: Feb 2016
Posts: 8,667 Likes: 408 |
I can't seem to find, or should I say, feel confident that I know which spark plug I should be ordering for a 1.6 Sigma engine. Any pointers and/or recommendation on what brand is recommended and/or part number? The NGK catalogue quotes an LTR51X-11 plug as the iridium upgrade for the 1.6 Sigma from 1996 - 2018.
Richard
2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone
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