In-Line Spark Checker for Recessed Spark Plugs, Noid Lights and Idle Air Control (IAC) Test Kit

• Use to test spark plug circuits, electronic fuel injection signals and idle air control circuits. • Quickly diagnose "no start_ and engine misses conditions in the electrical fuel injection and spark plug circuits. • Analyze rough running engines. • Supplied with instructions in a durable, plastic molded storage case. • Includes: Cat. No. 23970, In-Line Spark Checker Kit for Recessed Plugs. This is a must for testing newer vehicles with recessed spark plugs. Can also be used to test conventional and coil-on plug ignition systems, Noid Lights for checking GM PFI, FORD TBI, GEO TBI, BOSCH PFI, GM TBI, GM SCPI, BOSCH 2 and GM MULTEC 2, 2 IAC Test Lights for straight and 90_applications