The car was done yesterday, but didn't want to post until I'd given it a proper run. It's running fine again now, the spark plug hole was enlarged, rethreaded, and an insert fitted. Had a bit of a moment after I'd put it all back together as it still had a misfire on the same cylinder (5), but I'd swapped HT leads on 4 (got taken out by the wayward plug) and 5 (thought it might have been damaged by the plug detaching itself so quickly from it) for the old ones I took off last year, turns out the old HT on 5 was dead, as when I refitted the plug lead for 5 that had been on there it ran fine. Checked the tightness of the other plugs, all took a little nip more to get them tight, apart from cylinder 1 which took 2 turns!!!!! Now, I've fitted plugs more times than I can remember, so either I wasn't paying attention when I did it (it was done at the mini fix meet her for Graham's brakes and there was plenty of banter flying around) or I need to do them up tighter on a turbo engine. Anyway now my spark plug covers smashed to bits, and in the bin, I will be keeping a close eye on them, still got to get a new spark plug to replace the one that parted company with the engine, as I nicked one off the cabbie, and it's a NGK Platinum, whereas the others are Iridium.
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