Changed thread title to more accurately reflect content.
Bit of an iupdate
On the ignition side I had already swapped over both coils leaving HT leads in-situ, this was done a while back along with new plugs trying easy things first. Also pulled plug 4 lead and tested with spark plug (engine running), plenty of spark, in fact almost continuous which I put down to high efficiency engine.
That in my mind ruled out lack of spark but decided (run out of things to change/buy
) to swap out HT lead 4 for 3 and clear codes. Total surprise on my part to see code had moved to 3, tried again with 1, same thing which suggests faulty or incorrect lead (even though it knocks out a fair spark having had a few jolts myself while fault finding).
It's also possible the leads maybe incorrect for the car providing too much resistance (or too little), gone are the days when you just bought four foot of HT cable and cut it to length


Anyhow, old leads didn't have any OEM numbers so ordered a generic set - can always change later if poor quality.
Hopefully next post will be a thumbs up!
Bit of an iupdate
On the ignition side I had already swapped over both coils leaving HT leads in-situ, this was done a while back along with new plugs trying easy things first. Also pulled plug 4 lead and tested with spark plug (engine running), plenty of spark, in fact almost continuous which I put down to high efficiency engine.
That in my mind ruled out lack of spark but decided (run out of things to change/buy
It's also possible the leads maybe incorrect for the car providing too much resistance (or too little), gone are the days when you just bought four foot of HT cable and cut it to length
Anyhow, old leads didn't have any OEM numbers so ordered a generic set - can always change later if poor quality.
Hopefully next post will be a thumbs up!