[wafrederick]

I know a guy that works on them,most aftermarket scan tools will not read codes on a Jaguar and the Snap On Modis is the only one that does.Try diagnosing a bad fuel pump on them,there are two of them which there is a primary and secondary fuel pump.Look under a hood of a late 1970's Jaguar,has a 350 Chevy under the hood and there is a conversion kit to do this.Plus the parts are hard to get and are expensive,a crank sensor is $350.00 from the dealer.