engine analyzer is a complex, mult-function instrument, sometimes
called a scope, that can help diagnose engine and engine-related
problems or assist in tuning following an overhaul. An engine analyzer
can be used with gasoline and diesel powered vehicles.
Among the components and test capabilites it may include are pressure
and vacuum gauges, a tachometer, a timing light, a voltmeter, ammeter,
and ohmmeter, a vacuum pump, a cylinder output test, an exhaust/emissions
analyzer, and an oscilloscope.
An engine analyzer is connected by a variety of means, including
leads, inductive clamps, and probes to the various engine parts
from which it gathers data. These data go to a computer, or set
of computers, and are compared with manufacturer-supplied data for
that vehicle held on disk or CD. The analzyer processes all the
information and presents results on the state of the vehicle's engine
condition (identifying, for example, any uneven balance between
cylinders, worn timing chains, and compression problems), fuel system,
electronic control system, emission levels, battery, charging system,
and primary and secondary ignition systems.