I would not try switching out the pressure relief valve. A fellow with an OM603 tried one, it made his idle worse. ------------- Max Charleston SC
On Wed, May 8, 2019 at 9:00 AM Trampas Stern via Mercedes < mercedes@okiebenz.com> wrote: > So 4 glow plugs broke off on my OM606, I ended up drilling them out and > replacing. Only one needed thread insert because I grabbed wrong tap to > chase threads. While in there I replaced the fuel lines and fuel filter. > I prime the fuel filter by removing return fuel line and pressurizing tank > until fuel comes out return line. The car is still hard to start after > fuel filter change. > > Anyway got car started and drive it for about 20 miles, would occasionally > miss at idle like air still in lines. Then the car lost all power and > died. Towed home and it was not getting fuel... So I was close to 1/4 > tank of fuel so I removed fuel screen in tank and checked, it is all good. > I had cleaned out tank from coating failing already, but thought I would > check. The only thing I can figure is that the lift pump died. I removed > lift pump and it will create vacuum on inlet and pressure on outlet, but > still not pumping. > > New fuel pump will be here today and we will see, I am just having a hard > time believing that fuel pump died at same time as I did everything else... > However car does have 407k miles so fuel pump might be due for replacement. > > I can not think of anything else that would cause no fuel, unless cam in > injection pump is worn not to have enough stroke. I can pressurize return > line and get car to run, so I know it is a fuel supply problem. I have > thought about putting an electric pump on the car but figured that the > mechanical pump worked for 400k and if I get another 400k I will be happy. > > Also if anyone has an old fuel pressure relief valve from a OM617 they will > sell me please let me know. I hear the new ones from Mercedes are junk. I > have not checked my fuel pressure at injection pump to see if valve is > working but figured it might be time to change or adjust. > > Thanks > Trampas > _______________________________________ > 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
