Hello ,

I took the advice and ordered a set of injectors and glow plugs to remedy the cold start smoke, rough idle and poor fuel economy.
Now, they sent me with each injector a plastic bag with the metal seal and a square piece of paper (1.25" X 1.25") . What is this paper for ?
I will take the intake manifold off, clean everything good, ordered a new gasket for intake also. I will change the fuel return loop lines ( rubber hoses ) for all injectors . I will clean all vacuum lines and valves.
The timing chain and the cylinder head were replaced and have about 25K on them. The trap oxidizer I took off , cut a window in the side after removing the shield, gutted out all the ceramic , welded the window back on and put it back on the engine. According to the dealer records MB had done the campain on this car and it appears the previous owner took the parts off and put a trap back on from another car !!??. Tried to get them to do it again and will not.
After the injector work I will take it in to have the timimg and fuel delivery checked and adjusted properly.
Can someone, please, detail a step by step procedure to do this injector job right ? What is the torque requirement for injectors ? I bought a 27 mm deep socket. Is there a trick to get the injectors to line up nice ?

Thank you.

1987 MB 300D turbo (w124) 6 cyl - 603 engine