Quote:
Originally Posted by suginami
Anybody read this thread?
Why non-resistors plugs?
Also, relative to Platinum plugs, I did find this:
In the Technical & Restoration Forum in the March / April 2003 The Star Magazine, there is a question about platinum plugs and an interesting reply. It doesn't say who exactly wrote the reply, but it was probably Stu Ritter:
After I put Bosch Platinum +4 spark plugs in my 190E 2.6, a dealership advisor reprimanded me, saying they aren't recommended by Mercedes-Benz. He said that a service bulletin indicated that they should not be used. Is this so?
Some time ago a Mercedes-Benz service bulletin recommended against using fine single-wire platinum electrode spark plugs in their engines. The electrode on these plugs was so thin that the spark could be blown off the plug, causing misfires. The new Bosch +4 spark plugs are not covered by that old bulletin. Thin-wire plugs could cause poor idle quality and misfires at high rpm under full throttle. Mercedes-Benz has not recommended against the newer +4 plugs, which have four electrodes so are not about to have the spark blown off. You might tell your service advisor that serval versions of Bosch platinum plugs exist. |
Good finds! Is it possible through legend and folklore that the real issue – do not use fine-wire platinum plugs – evolved into ‘do not use resistor plugs’. Maybe the logic went like this… MB says ‘do not use fine-wire platinum plugs’. Now we all know that the vast majority of fine-wire platinum plugs are also resistor plugs. So maybe to keep things easy, people evolved the warning to include resistor plugs – if you do not use resistor plugs, you’ll never use a fine-wire platinum plug. Could explain a whole lot.
Cheers,
Jeff