[s-cars] Spark plug poll

[J. Khang]

<Dave Dawson> wrote:

> I've been using the Iridium plugs.? Expensive, like the Bosch plugs...
> but haven't ever had an issue.? I was to the point where I was taking a
> zip-lock baggie full of Bosch plugs with me on trips.? I was glad to find
> an alternative.

When I was still in the UK, I had issues with the F5DPORs coming loose but I think I managed to resolve it by tightening the plugs with the engine slightly warm though I didn't put in enough miles to confirm this once and for all.

My reasoning was that, with the engine warm, the plugs go in easier and seat better so when the engine gets hot, they don't tend to back out. I don't remember ever having a loose plug problem since then. I think they were actually hard to remove.

Try cleaning the threads in the cylinder head then installing the plugs with a warm (not hot!) cylinder head.

Oh, I've also switched to NGKs. BKR7Es in there at the moment but am switching to Iriway 8s (BKR8EIX) at the next change.

Jonathan


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