That sounds very similar to the symptoms when my head gasket blew (603.971). Oil started leaking into the #1 cylinder. Be careful about cranking/running it at all now. When I pulled the head, the #1 piston did not protrude as far as the others and I had to replace the connecting rod. Looking back, the bent rod could have been caused by hydrolock from the oil seeping into the cylinder from the extended cranking and short runs I made when I was diagnosing the problem. All that oil made the compression test results flaky so I was scratching my head for a while. Sometimes the compression on #1 would be 100 psi lower than the others, sometimes it would be 150 higher. I finally chanced to look into the prechamber when #1 was at TDC after I had been cranking the engine for a compression test and saw oil rising to cover the glow plug. Had that sinking feeling in the pit of my stomach...
-Dave Walton 94 S350, 99 E300 On 11/29/05, Marshall Booth <[EMAIL PROTECTED]> wrote: > Zeitgeist wrote: > > My OM603 has just now started to smoke (blue) so much so, that I think > > I'll be parking her for some time. This started with excessive > > smoking at startup, then progressed to a little puff of blue upon > > acceleration and is now emitting a minor cloud on acceleration and at > > idle. Methinks valve stem seals, a headgasket and turbo seals are in > > order...or, I have a bent rod, or the head is toasty, or all of the > > above. > > I'd check the compression of #1 to see if the seal between the the > cylinder and the oil passage has failed. > > Valve stem/seal problems producing the symptoms you describe are VERY > rare in OM60x engines even after 300-400kmi of service. Turbo seal > failures are also rather rare. 603.96 engines almost NEVER have shown up > with bent rods (I've heard of one or two). > > Marshall > -- > Marshall Booth (who doesn't respond to unsigned questions) > "der Dieseling Doktor" [EMAIL PROTECTED] > '87 300TD 182Kmi, '84 190D 2.2 229Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 > turbo 237kmi > > _______________________________________ > For new parts see official list sponsor: http://www.buymbparts.com/ > For used parts email [EMAIL PROTECTED] > > To Unsubscribe or change delivery options go to: > http://striplin.net/mailman/listinfo/mercedes_striplin.net >
