|
If you have trouble with very short glow plug life, test to see if the relay is coming back on after the engine starts and energizing the plugs, which wears out the plugs pretty fast. This has been happening more frequently as the relays get to be 20+ years old. I've heard of it several times over on the MBZ.org diesel email list. A new (or good used) relay is the cure. Also if you have disconnected the purple wire as a "cheap afterglow" mod, this also shortens plug life if you don't have a switch rigged up to disable the feature when the engine is warm. If none of that applies, you could have a bad injector spray pattern (which can shorten plug life), or just gotten a batch of faulty plugs! Bosch and Beru are the preferred brands, avoid Monark if possible, probably avoid Autolite too...
|