Poor Ignition Coil Reliability (thoughts?)

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svenedin
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Re: Poor Ignition Coil Reliability (thoughts?)

Post by svenedin »

Bill_qaz wrote: Sat Aug 22, 2026 2:54 pm Stephen, as the resistance plug caps are purely to suppress interference and nothing to do with engine performance.
Could you not fit non suppressed plug caps,readily available, as there are no electronics to be interfered with on your minor
Bill, yes I could but I think suppression is a legal requirement? I remember as a child how annoying it was to hear the interference on the radio at home so I don't want to be a mobile nuisance to others. For now a set of standard suppressed carbon string Lucas leads are on the car and it ran very eagerly earlier. They are pretty reasonably priced and actually seem good quality which is a bit of a surprise for modern "Lucas". I will carry a spare set of these leads in the car pre-installed on a distributor cap then that is a rapid fix at the roadside. Of course I am now in the habit of checking spare parts by running them on the car on a test drive (if this is practical) rather than assuming that what I have in the boot as a spare actually works!

Stephen
1969 1098cc Convertible “Xavier” which I have owned since 1989.

Stephen
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Bill_qaz
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Re: Poor Ignition Coil Reliability (thoughts?)

Post by Bill_qaz »

svenedin wrote: Tue Aug 11, 2026 3:43 pm
Bill_qaz wrote: Tue Aug 11, 2026 3:18 pm Stephen, managed to grab a pic today. Its a Lucas coil and is bolted to the inner wing near the rebound stop bracket. Bit of a clean up and terminal fix on schedule now I've seen it for the first time since buying the car. :lol:
20260811_122731.jpg
Thank you. What you've got there is a good old coil of the type Myoldjalopy refers to. That's an old Lucas logo on the coil bracket. Yes clean up the terminals, give it a wipe and put it back! Whatever you do, don't join the Russian Roulette game of modern coils!!!

Stephen
Rerouted the tight wire and cleaned the top :o its actually white,it was just dirt. The Lucas is plain to see and noticed the connection points are raised on the top. Is this one of the older versions you referred to?
20260822_201351.jpg
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Regards Bill
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svenedin
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Re: Poor Ignition Coil Reliability (thoughts?)

Post by svenedin »

Bill_qaz wrote: Sat Aug 22, 2026 8:28 pm
svenedin wrote: Tue Aug 11, 2026 3:43 pm
Bill_qaz wrote: Tue Aug 11, 2026 3:18 pm Stephen, managed to grab a pic today. Its a Lucas coil and is bolted to the inner wing near the rebound stop bracket. Bit of a clean up and terminal fix on schedule now I've seen it for the first time since buying the car. :lol:
20260811_122731.jpg
Thank you. What you've got there is a good old coil of the type Myoldjalopy refers to. That's an old Lucas logo on the coil bracket. Yes clean up the terminals, give it a wipe and put it back! Whatever you do, don't join the Russian Roulette game of modern coils!!!

Stephen
Rerouted the tight wire and cleaned the top :o its actually white,it was just dirt. The Lucas is plain to see and noticed the connection points are raised on the top. Is this one of the older versions you referred to?
20260822_201351.jpg
Yes it is definitely a "vintage" Lucas coil with the style of the raised platforms that the connectors sit on. The modern ones have turrets. We can tell it's not especially ancient because it's marked + and - and not SW and CB. Despite the "Super" sticker on the bracket it may well be an LA12. At a guess I'd say it's 1980's or even 90's because the earlier Lucas coils had black plastic not white. Somewhere I did have a 1969 Lucas coil, possibly my car's original that was marked + - by then. As with all Lucas products at that time, it is date stamped on the bottom. Yours is probably date stamped as well.

Stephen
Last edited by svenedin on Sat Aug 22, 2026 9:30 pm, edited 1 time in total.
1969 1098cc Convertible “Xavier” which I have owned since 1989.

Stephen
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svenedin
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Re: Poor Ignition Coil Reliability (thoughts?)

Post by svenedin »

Thanks to everybody who helped with the coil woes. A lovely drive out this evening without any issues. Titsey Brewery, Westerham, Kent on the top of The Downs. Spectacular view and a good supper. Great beer, shame I could only have 1 pint of bitter shandy. A crime to mix good beer with lemonade but hey ho. Morris is hiding keeping watch.

Stephen

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1969 1098cc Convertible “Xavier” which I have owned since 1989.

Stephen
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