This is a model that can produce both vacuum and pressure: Mityvac MV8510 Silverline Elite Hand Pump. Looks like they are about $60 on Amazon, you may be able to find it sold locally and get it today. Make sure you get one with the switch so you can test both vacuum and pressure. ------------- Max Charleston SC
On Wed, Sep 23, 2020 at 9:00 AM Max Dillon <dillonm...@gmail.com> wrote: > I agree with Manfred. Did you test the circuit for the fuel door with a > MityVac or a similar tool? > > Isn't the pump on this car a dual action pump, which produces either > vacuum or pressure as required? That is how my '87 124 wagon works, as > well as my younger 124 cars. If that is true, then you need to test that > circuit (tubing and pod at the fuel door) using both vacuum and pressure, > because it may leak for one but not the other. MityVac does that. > Max Dillon > Charleston SC > > Sep 23, 2020 8:37:59 AM MG via Mercedes <mercedes@okiebenz.com>: > > > If this is the same system as the one on my daughter's SD, the pump > locks and unlocks both the doors and the gas door. So if the doors lock and > unlock then the pump is not your problem. > > > > If the tubing is good then the next place to look is the air pod for the > gas door, or there could also be a bend in the rod that may be causing > friction so the pod is unable to move the rod. > > > > Patrick Atuonah via Mercedes wrote: > >> Thanks to Dan for your suggestion. I managed to open the fuel door. > >> The re is no air leak anywhere in the tubing as Max mentioned. I am > >> suspecting the vacuum pump in the trunk has gone south. > >> Anyone have a good vacuum pump laying around? This model has an > orthopedic > >> driver's seat. > >> PM me if you have one. > >> Thanks for your help > >> Patrick > >> _______________________________________ > >> http://www.okiebenz.com > >> To search list archives http://www.okiebenz.com/archive/ > >> To Unsubscribe or change delivery options go to: > >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > >> > > _______________________________________ > > http://www.okiebenz.com > > > > To search list archives http://www.okiebenz.com/archive/ > > > > To Unsubscribe or change delivery options go to: > > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
