The inertia switch was located by the lambda counter on the early cars. In a recall it was relocated to the area by the bonnet release because it was being hit by the driver's feet and being tripped inadvertantly. There was also a recall involving replacing "defective" or overly sensitive inertia switches. If your switch doesn't have a white splotch of paint on it then it may not have been replaced. I have also seen where the switches were bypassed. This may be the case in your car where not only was it bypassed but also removed. I strongly recomend having a working inertia switch because not only will it shut off the fuel pump in the event of a serious accident, it's other purpose is to unlock the doors. This is important because the driver may panic and not unlock the doors before trying to open them or (worst case) if the driver is unconcious it allows rescuers to remove the occupants quickly and without having to damage the car further. Of course this assumes that the central locking system is functional. The Delorean venders all carry the "improved" inertia switch and can help you with the install. The filter located in the tank is only supposed to keep the "big stuff" out of the pump. You really shouldn't try to filter too fine on the suction side of a pump. Most in-line filters are supposed to be on the pressure side. If the filter inside the tank was very dirty you should clean out the tank and replace the filter by the rear wheel. David Teitelbaum vin 10757 --- In dmcnews@xxxx, Martin Gutkowski <webmaster@xxxx> wrote: > Over here in the UK, standard unleaded is 95 octane and super unleaded is 98 octane. I've > only put standard in my DeLorean so far, and HAVE had bucking problems, but traced it to > a blocked fuel pickup filter. I have now butchered the "question-mark" shaped hose and > inserted an in-line pickup filter, which as of last night when I drove 120 miles, works > beautifully. > > (The reason I put in an in-line filter was because of how cheap and easy it is to get > this particular filter (£6), compared to the inferior standard pickup filter.) > > To go back to the original point, 95 octane petrol works fine. I haven't tried super yet. > > The inertia switch SHOULD be located next to the bonnet release handle. I say SHOULD > because mine's conspicuously absent... > > Martin > #1458 > > Adam Price wrote: > > > My car also began bucking this morning for the first time. Fuel is > > completely full and voltage levels normal. I put premium gas in it for the > > first time since I;ve owned it. I know these engines are rated for 91 > > octane, but premium is 92. Could this adversely affect the engine > > performance? > > > > Where is the inertia switch? > > > > Adam