[Vwdiesel] Glow plug confusion --- ( Bentley is wrong say I )

[H .Hagar]

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Who ???   mentioned Bentley a short while ago.       Your statement made me read my bentley for the first time.  Bentley Stock No. VRD4.       I had the glow-plug system spooked out long before I got the Bentley .     Bear in mind that it is seldom a person with hands on experience that writes the books. Then some books go through a Translator , the result is errors.      Proof reading by the design engineer is sometimes skipped ----bad idea that is.
The reason for the two types of Bosch plugs , has to do with the jacket temperature. The alloy "Monel" or Inconel or what not, has a critical maximum.     That's why the old style " SLOW" plugs white metal top ones. burned out so often. They did not have a resistor built in to lower the temp if powered continuously.       The new style "QUICK" or "FAST" plug has a internal ballast resistor and will stand power on for up to 3 minutes , by design.  There is little difference in the time to reach glow .If you hook up two plugs in parallel , one of each, you will se what I mean.
 The main difference between the two systems , has to do with the "controller"   The old system turned off the minute engine fires, the new does not. Afterglow it is called , was used to reduce white fog from cold turbo Engines. But it works for ALL diesels.´      More on this some other time.         Hagar.
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