![]() ![]() Read and clear OEM level diagnostic trouble codes (DTC). Perform dealership level routines, self-tests and calibrations for diagnosis, service and repairs. ![]() View, graph, record and playback live data.Įnable and disable actuators, relays and components. Read and clears OEM level diagnostic trouble codes (DTC) includes OEM details. Professional-level functionality for reading and clearing fault codes monitoring, graphing, recording and playback of live data performs bi-directional controls, routines, relearns and calibrations for vehicle on-board systems. Read permanent diagnostic trouble codes (PDTC) for Powertrain. Read vehicle information (VIN, CAL ID, CVN, IPT). Read pending diagnostic trouble codes (DTC) for Powertrain.Ĭontrol of on-board system, test or component. View on-board monitoring test results for specific monitored systems. View oxygen sensor monitoring test results. Read current diagnostic trouble codes (DTC) for Powertrain.Įrase diagnostic trouble codes (DTC) for Powertrain. Identifies three (3) levels of vehicle fault severity. View vehicle conditions recorded by the on-board computer at the time the emission-related fault. Adjust the Timing Light barrel, as needed, to adequately light the timing marks. View trip cycle procedures that instructs how to drive the vehicle in such a manner to meet the required “Enabling Criteria” to run and complete its diagnostic testing. Adjust the engines idle speed, if necessary, to conform to manufacturers specifications: If using the Model 3555 Advance Timing Light, MAKE SURE the Advance Control Knob is rotated fully counterclockwise to ' 0 '. ![]() ![]() View monitor readiness status for gasoline and diesel engines. For that reason, it is best paired with another form of ignition advance: you guessed it, the vacuum canister.Professional-level functionality for reading and clearing OBD2 powertrain emission-related fault codes viewing freeze frame and I/M data monitoring, graphing, recording and playback of live data, vehicle information and performs emission readiness testing. It cannot take into account engine load, fuel mixture or any of the many other variables that dictate ideal ignition timing. If your timing index on the motor is unreadable. Mechanical advance relies on one input, and one input alone: RPM. An advance timing light has a dial on the back of it so that you can set it to the correct timing setting, I.E. This works great as long as you are only setting initial timing and only if you can line up the marks from the timing tab on the engine to the TDC mark on the balancer. A normal timing light flashes the instant the Number One spark plug fires. We make mechanical advance sound pretty great and in theory, it is but there is a major problem with it as the only source of ignition timing compensation. Jeff Smith: What you are using is what is commonly referred to as a dial-back timing light. It can be adjusted by changing the stiffness of the springs on the distributor's weights, and the amount of mechanical advance can be increased or decreased based on stop-bushings in the mechanism. This mechanical (also known as a centrifugal) advance is an extremely reliable and simplistic approach to controlling engine timing at given engine speeds. As the distributor spins faster and faster with engine RPM, centrifugal forces fling out weights inside the distributor housing, moving a cam mechanism and advancing the timing. For this reason, a mechanical advance is built into most distributors. As an engine revs up, we need to allow even more of a head start for the spark plug in order for complete combustion to occur. ![]()
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