According to my recollection of Marshall Booth's descriptions, it is possible to follow correct torque procedure (30Nm - release - 30Nm - release - 35Nm - lockdown) and still warp the IP body, which requires a re-do.
My idea of doing one at a time (when doing them all) would help you determine which one had warped the IP body. I admit I've only rebuilt all of them at once on two different motors, and on neither motor did I start the engine between each DV rebuilt. Both were OM60x engines and on neither did I have any problems, but a thought experiment lead me to believe that an engine start to listen to the IP between each DV might be wise. Could be either too difficult or worthless if you have the intake manifold off when you re-start and can't hear anything different because of the extra noise from the intake openings in the head. Maybe you should only do the leaking DV's in order to reduce the possibility of a problem? -Max -----Original Message----- From: mercedes-boun...@okiebenz.com [mailto:mercedes-boun...@okiebenz.com] On Behalf Of LarryT Sent: Friday, January 08, 2010 11:05 AM To: Mercedes Discussion List Subject: Re: [MBZ] Fuel delivery valve job Hi Max, I've yet to do my DVs since it's so greatly improved following the MMs - but the DVS are leaking and need t be changed. I was considering your suggestion about doing 1, start the engine, then move to the next one. When I looked at my 91 300D, it looks like I need to at least partly remove the manifold to access the rear 3 or 4 DVs so I'd rather not try your procedure. However, you said "Easy to do the procedure right and still have a problem," - that's pretty depressing! Do it right and STILL have a problem? Jeez, what a PITA. I may have to let the dealer do it if that's the way it is. I really don't want to damage the IP! Please explain how I might follow the torque instructions and *still* have a problem --- Or better, how can I follow the instructions and do it *right* the first time? Gotta go, my head is spinning. Time to defornicate... ;-) LarryT 91 300D OilAnalysis Time? Looking for Weber Parts or Porsche Posters? www.youroil.net -------------------------------------------------- From: "Dillon, Meade M CIV SPAWARSYSCEN-ATLANTIC,53310" <meade.m.dil...@navy.mil> Sent: Tuesday, January 05, 2010 8:06 AM To: "Mercedes Discussion List" <mercedes@okiebenz.com> Subject: Re: [MBZ] Fuel delivery valve job > It's not that bad, just requires very specific steps, cleanliness, > patience, and the right tools including the special socket and a > torque wrench, and some parts. However, easy to screw up and cause > expensive damage if done wrong, so handing off to a pro is the right > choice in some circumstances. > > If you detect any new noises from the injection pump, one or more of > the DV's has not set correctly during the torque procedure and needs > to be re-torqued (torque to 30Nm, release, torque to 30Nm, release, > torque to 35Nm and lock down). Easy to do the procedure right and > still have a problem, but that noise is due to a warped IP body which > will cause expensive damage if not fixed. For that reason and to > avoid confusion about which DV might be the cause of such a > hypothetical noise, I think it's best to do one DV at a time and > start-run the engine briefly after each DV has been re-sealed and locked down. > > I like the new word: defornicate. Don't mis-underestimate its uses! > > -Max > -----Original Message----- > From: mercedes-boun...@okiebenz.com > [mailto:mercedes-boun...@okiebenz.com] On Behalf Of Redghost > Sent: Tuesday, January 05, 2010 12:49 AM > To: Mercedes Discussion List > Subject: [MBZ] Fuel delivery valve job > > The indy scared me about this job. He said it is too delicate for him > to do, but I suspect it is more that Gump is a heap and he is not > interested in keeping her on the road. He agreed to do the job anyway. > > I have done enough of these sorts of "simple" jobs that end up > screwing the car up. Figured it would just save us all headache to > have a pro do it, since the past few times under the hood, I ended up > having a shop defornicate the mess I made. > > clay > > _______________________________________ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com To search list archives > http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > _______________________________________ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com To search list archives > http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
