More fuel for the fire. This note is in the M119 engine manual. If 5k ohm rotors are not permitted, why would it be ok to use spark plugs that add 5k ohm resistance?
Tom at MBCC is correct, if the original factory spec was non-resistor, don't use resistor plugs. The correct non-resistor plugs for most MB's are still available via aftermarket sources if you look hard enough. The problem is, not all vendors carry the non-resistor plugs, and many vendors have online catalogs which incorrectly show resistor plugs for the vehicle or part number searched. Be careful out there.
For our next discussion, let's delve into fine-wire electrodes (platinum, yttrium, etc.)... note that
none of those are available in non-resistor.
