Differences

This shows you the differences between two versions of the page.

--- techtalk:ref:genmsr02 [2022/02/11 22:24]
hippysmack [Quick Check Visuals]
+++ techtalk:ref:genmsr02 [2022/02/11 22:42]
hippysmack [Reading Spark Plugs]
@@ Line 18: / Line 18: @@
 The difference is due to variations in the air cooling, turbulence in the manifold and differences in exhaust lengths. ((FoxsterUK of the XLFORUM http://xlforum.net/forums/showthread.php?t=461641)) \\
+====== Quick Check Visuals ======
+Examine plugs as soon as they have been removed. \\
+Deposits on the plug base are an indication of the plug efficiency and are a guide to the general condition of rings, valves carburetor and ignition system. ((1986 HD Dealer FSM pg 7-13)) \\
+  * A wet black or a shiny deposit on the plug base, electrode or ceramic insulator tip indicates an oil fouled plug. \\ May be caused by worn rings, pistons or valves.
+  * Dry fluffy or sooty black deposits indicate a too rich air/fuel mix or too long periods of idling.
+  * A light brown glassy deposit indicates an overheated plug. \\ May be accompanied by a cracked insulator or erosion of the electrode. Caused by a too lean air/fuel mix, a hot running engine, valves not seating or improper ignition timing. \\ The glassy deposit is a conductor when hot and may cause high speed mis-firing.
+  * White, yellow or light tan to rusty brown powdery deposits indicates balanced combustion. \\ The deposits may be cleaned off at regular intervals.
 ====== Before Reading Them ======