LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mercedes Benz >> 1990 >> 350SD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1 (Engine Controls - Basic Testing) >> EZL Electronic Ignition Checks >> Spark
April 5, 2026: LEMON Manuals is launched! Read the announcement.

EZL Electronic Ignition Checks: Spark

WARNING: This page does not describe the selected car, but rather 19 other vehicles, including the 1992 Mercedes-Benz 500E, 1992 Mercedes-Benz 400E, 1992 Mercedes-Benz 300TE, 1992 Mercedes-Benz 300E, and 1992 Mercedes-Benz 300D. However, it is still accessible from the selected car via links, so may be relevant.

Remove fuel pump relay or MAS unit before cranking engine. Using high output spark tester, inspect coil wire for spark and then inspect each spark plug wire. Using ohmmeter, verify correct spark plug wire resistance on suspected wires. See HIGH TENSION WIRE RESISTANCE TABLE.

HIGH TENSION WIRE RESISTANCE

Application Ohms
All Wires 25,000-30,000