landkeeper Posted November 20, 2009 Share Posted November 20, 2009 a friend has a 98 v9 3.9 efi standard disco that wont run there are only 6 volts getting to the coil and no spark at all are there any common faults with this system that would cause this Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted November 20, 2009 Share Posted November 20, 2009 I think, the coil runs at 6V when in normal running mode, and 12V when starting to give it a boost, so that is probably normal if you are measuring it with just the ignition on. Have you tested for a spark directly from the coil? I'd try to find a second hand coil and ignition amp (on side of dizzy) and swap them out one by one to see what is causing the problem. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted November 20, 2009 Share Posted November 20, 2009 Also have a flip through the Range Rover forum, running problems have been done to death 100 times over. Quote Link to comment Share on other sites More sharing options...
vougese39 Posted November 22, 2009 Share Posted November 22, 2009 spider unit failed coil should be 12 volts unless you have a balist resister fitted unlikley though Quote Link to comment Share on other sites More sharing options...
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