as the title suggests, i have an idle swine...of a problem. anyway, mi mate brought his 6 over today, to try sort out a high idle problem. Following Johns advice, we ground + ten, and adjusted the idle control screw, which i may add was already all the way down (??). So I got him to switch off, totally unsrew the valcve and re grnd+ten, still same issue. We could only get it to idle at 750....anything else we can check? He says its due a service, and will do the Ht leads at the same time, but it strikes me that there is something else causing his high idle. The car drives fine otherwise he says, with only a small amount of power loss (service due tho). We didnt reset the ecu, OR check the timing, because it struck me that the timing MUST be fine, as the engines purrs nicely, and otherwise runs fine...