matto-disco-1 Posted October 19, 2013 Share Posted October 19, 2013 what rpm should my v8 discovery tick over at ? many thanks matt Quote Link to comment Share on other sites More sharing options...
teabag Posted October 19, 2013 Share Posted October 19, 2013 Carbs or EFi 3.5 or 3.9???? 3.9 it's 665 to 735 according to the workshop manual which is available to download. Quote Link to comment Share on other sites More sharing options...
matto-disco-1 Posted October 20, 2013 Author Share Posted October 20, 2013 3.9 injected ahh right okay its ticking over at a 1000rmp any ideas why ? Quote Link to comment Share on other sites More sharing options...
teabag Posted October 20, 2013 Share Posted October 20, 2013 Idle control valve sticking, base idle requires resetting, ignition timing incorrect, air leaks, loose vacuum hoses and there's more that I can't think of at the moment Quote Link to comment Share on other sites More sharing options...
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