jumping

never presume the same symptoms in the same car are down to the  same issue

exhaust pulse test

A quick powerfull method of checking engine integrity and running state

Cost £45

Rusty fuel tanks

A nice jag that has been stood for a long time was suffering from lack of fuel and avery noisy pump cause rust clogged fuel system

connecting an oscilloscope

Remember an oscilloscope is measuring voltage making the possibility of shorts a ll to  possible.
So common sense prevails

Oil change intervals

Certain makes of cars demand fully synthetic

Injector cleaning fluids

D o injector cleaners work?in theory into the tank and your good.
No dont waste your money.
Only injector removal and ultrasonic cleaning actually works.We carry out this service so please enquire