I recently did all the fuel lines/o-rings/filter/copper washers on my brother's '95, and it barely starts, barely runs, even flooring it. It started and idled fine when I first finished the job, but would bog down and struggle to maintain 15mph. My brother thought he could figure it out, went in there and bled the "plungers" off the pump (technically I think those are the injectors, while the nozzles are atop the head??). Anyway, he forgot to tighten one of nuts atop the injector. I think he introduced a bunch of air into the system...although the new fuel lines sure look free of bubbles.

I've seen it posted before that the '95 and later models are supposed to bleed out air in the fuel automatically...but i have to ask, is there a manual IP bleeder valve like on the older diesels?

I've tried bleeding out air by cracking the nozzles one-by-one, and even the injectors off the pump. A friend of mine did this on his Cummings diesel 2 weekends ago and that fixed his ills. Does this mean the lift pump needs replacing? I did notice that the stop knob bolt atop the fuel filter seems to be leaking out of the knob part, not from between it and the housing (I replaced both o-rings). I tore the bolt off my '99, but it has a bigger internal diameter for greater fuel flow. That didn't solve anything. Argh!

Any advice is welcome. Thanks.

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'64 230SL