I have a very odd problem with my E-Tyer Ser3 V12 . The car runs perfectly above 1,500 Rpm, but when the revs drop below this, the engine cuts out. I can then start it up again and providing I accelerate above 1,500 rpm will run perfectly. This problem came on very suddenly as it ran OK the day before. I checked the Barrett ignition system under the distributor cap and nothing loose the gap is quite small at about 5 thou.