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Wales
by Joske Vermeule, September 1
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Forums39
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Jun 14th, 2026
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Joined: Jul 2014
Posts: 663 Likes: 14
Talk Morgan Regular
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Talk Morgan Regular
Joined: Jul 2014
Posts: 663 Likes: 14 |
Good idea to smear the threads of the plugs with ultra high temp ceramic grease (Copperslip is ok but ceramic is better) and do not over tighten. I always remove the plugs from new cars I acquire and replace them after lubricating the threads. This is especially important in modern engines since the plugs stay in for years before they need changing and one must be so careful with fine threads and alloy heads.
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BigLes |
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Joined: Aug 2019
Posts: 224 Likes: 13
L - Learner Plates On
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OP
L - Learner Plates On
Joined: Aug 2019
Posts: 224 Likes: 13 |
I went to my local motor factors and bought a set of the NGK LTR6DI-8, so I'll see how they go.
Nice info about engine covers - thanks everyone.
Roadster 3.7
Plus 4 110 Anniversary
Plus 4 Fiat TC
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Joined: Aug 2019
Posts: 224 Likes: 13
L - Learner Plates On
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OP
L - Learner Plates On
Joined: Aug 2019
Posts: 224 Likes: 13 |
I need to replace the spark plugs on my 2020 GDi (the front one is badly corroded around the ceramic). The car is currenly fitted with Ford CYFS12Y1 (original fitment), however they are not that easy to find (no doubt due to the engine being for the US market). I have been offered NGK LTR6DI-8 as an alternative - does anyone know if these will be OK or can recommend anything else? The NGK LTR6DI-8 also known by code 96588 is described as a laser iridium plug suitable for Ford Focus ST250 and Focus RS 2.3. They are pre-gapped at 0.8mm with NGK heat rating of 6. Here is a list of cross references to the Ford CYFS12Y1. As these are the plugs I have just bought, is that gap of 0.8mm correct for our GDi engines?
Roadster 3.7
Plus 4 110 Anniversary
Plus 4 Fiat TC
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Joined: Feb 2016
Posts: 8,697 Likes: 416
Needs to Get Out More!
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Needs to Get Out More!
Joined: Feb 2016
Posts: 8,697 Likes: 416 |
I believe 0.8mm or 32 thou is near enough. Certainly most fit them as supplied for the simple reason the fine tip can easily be damaged by adjustment. Another reason why the gap is included in plug spec. Les.
Richard
2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone
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BigLes |
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