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Author Topic: Warning. Ignition123 electronic distributor & iridium plugs  (Read 653 times)
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Senior Member
Posts: 106

« on: 24 October, 2021, 10:02:55 AM »


I had problems with my Flaminia running badly for months and couldn't work out what the problem was.

It was that iridium plugs are not compatible with the 123 distributor.

I emailed the designer and he immediately came back with "Put your original plugs back in". Problem solved.


Charles Frodsham
Posts: 207

« Reply #1 on: 24 October, 2021, 05:42:30 PM »

Well done Chris!

Any more information as to why they are not compatible?
Posts: 25

« Reply #2 on: 25 October, 2021, 02:30:40 AM »

this is good to know. i'm running iridium plugs in my fulvias and am about to grab a 123 to have a play with.


69 S1 RHD Fulvia 1.3s since 2001
67 S1 RHD Fulvia GT 1231cc since 2020
67 S1 RHD Fulvia GT 1216cc since 2021
Senior Member
Posts: 155

« Reply #3 on: 25 October, 2021, 04:54:39 PM »

The plugs are fired by the coil, as long as the plug gaps are not too large for the coil output I cant see what difference the distributor makes.


1976 1.3s coupe
1973 1.3s coupe
1982 montecarlo project
1976 alfa GT
1981 alfa spider
Rebel Poster
Posts: 829

« Reply #4 on: 25 October, 2021, 09:42:01 PM »


On reading the various comments it appears the Iridium ones can operate at lower voltages than copper/platinum and if recommended for a car, then not to use platinum or copper ones which makes me suspect that you need to have the ignition system tailored for iridium ones and to stick with the manuf suggested plugs unless you have modified the engine.


Beta Spyder S2 pre F/L 1600
Beta HPE S2 pre F/L 1600
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