> Could you please elaborate on the resistance comment for testing glow > plugs? > is there a ohm reading that states the glow plug is acceptable and > anything > above/below that reading is a call to replace that glow plug?
Parallel plugs measure about 0.6 ohms cold. And your meter has to be good enough to resolve down this low, not all are. Series plugs are almost immeasurably small with any common ohmmeter, around 0.02 ohms hot, measuring the voltage drop in operation is much more reliable, and infinitely easier. The best parallel test is a current meter, but ones that will measure up to about 30A (peak) aren't cheap. Old panel-mount automotive ammeters work well for that. I have one parallel plug that measures pretty good on the Fluke ohmmeter (not sucky), yet it draws about 2x the proper amount of current. Most failures are more obvious, and measure as a notably higher cold resistance. -- Jim _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
