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This is a part 1 of a walk-through showing how to replace intake manifold on the Mercedes M272 V6 engine. Same procedure applies to the M273, which is a V8 version of the same engine.
Quick guide: • Replacing MB M272 Inta...
Full video, part 1: • Replacing MB M272 Inta...
Full video, part 2: • Replacing MB M272 Inta...
Part one is about removing bolts, cables and preparing things for intake manifold removal.
Part two is about disconnecting fuel system, removing the intake manifold, moving parts to the new manifold and putting things back together. I also show what the actual problem is inside the manifold and compare it to the new unit.
The new intake manifold is a OEM from Pierburg and I got it from Germany for about 500 euros. You also have to buy intake gaskets, they do not come with the manifold. But my unit had throttle valve actuator gasket with it, that I did not had to buy. Do not use old gaskets or there will be a vacuum leak.
Tools I used are standard tools, nothing special or brand specific tools are not required.
I personally do not have much experience of car engines but I know how to hold a wrench and a screwdriver so I thought this could be a fun and teaching DIY-project to do on my own. I also saved over 2000 euros instead of leaving my ride to a car repair shop for over a week.
The old manifold was driven about 170 000km when it started to show some early signs of problems and at about 200 000km it was complete wreck and parts started to fall off.
Project took me about two days, but I think I could have done it one day if I would have burned the midnight oil. But that would have taken all the fun out of this project. I also used about one extra day to do some investigation about the job before starting to work. This video shows the process and all tricks and tips I learned.
Be careful when working around open intake tracks, do not let anything get in to the engine or a engine failure could or will occur. A small amount of common dirt is ok, that will come out from tailpipe. But protect the valves!