1996 V8 Intermittent Power Loss

Hi all... hope someone here can help me!

I have a '96 D1 with the 3.9 V8 Efi engine. Since I bought it (about eight weeks) it has had an intermittent power loss/cutting out problem. The problem is best described as a short but total loss of power, lasting a second or so, sometimes repeated so there's a 'kangaroo' effect. This might happen twice in a day, or not for a week. Significantly the engine never cuts completely - I have never had to re start the engine. The revs drop to idle and then just as suddenly the problem is gone and progress continues normally.

Things changed so far:

New lead set, including the king lead
Immobiliser spider (wired out of circuit using the official LR part)
New ignition coil (old one had insulation breakdown round the neck)

I have a new distributor cap and rotor arm to fit, but not done them yet.

Does anyone have any suggestions as to what might be the culprit, even better - has anyone cured a similar problem??

Oh, one last bit of info - a very knowledgable LR specialist that I know has suggested that the mechanical advance weights in the disty might have been damaged by someone trying to lever a stuck rotor arm off. I will probably pull the disty for him to look at over the weekend.

Hope someone can help - this is driving me mad!
Thanks in advance..

sounds to me like a fuel problem rather than ignition, if the advance weights were stuck then it'll cause lack of power on acceleration but it'll be all the time, i suspect a possible fuel pump fault. As its intermittant, the best way would be to connect a fuel pressure gauge to it and monitor it while driving (somehow!!), or just change the pump and see.

I had the problem once, the tank was a bit low, so I think some ****e inthe tank got sucked through, it was strange that the management light came on as the engine decided to slow down to an idle, gave to a good throttle after 5 attempts to start and promptly went to garage for some fuel, so i would say you have crap in the fuel line.