Valve cover gasket replacement on BMW's legendary M47 diesel engine, with more than 500000km, on the e46 (Compact) chassis.
Since this job requires removing the injectors, I also demonstrate how to remove them, clean the injector seats, and refresh them with new washers and seals. Of course, I inspect the timing chain for play and check the swirl flaps for the first time since last year's cleanup.
0:00 Mileage
0:04 Intake air duct removal
0:25 Cabin air filter/tray removal
2:04 Injector harness removal
2:38 Intake manifold removal
4:48 Unplugging the MAP sensor
4:55 Intake manifold removal
6:06 Swirl flaps check
6:21 Injector numbering
7:07 Injector removal
12:23 Air filter removal
12:57 Valve cover removal
13:59 Top-end inspection
14:17 Injector seats cutting/cleaning
16:25 Dangerous but effective technique
16:55 Injector seats cutting/cleaning
17:07 Timing chain play inspection
17:35 Valve cover gasket replacement
19:01 RTV on sharp changes in direction
19:24 Installing valve cover
20:19 Torqued down to "trust-me-bro" Nm
21:05 Preparing the injectors
23:21 A touch of high temp copper grease
23:36 Installing injectors
26:11 Air filter/ducts back on
27:07 Intake manifold back on
27:49 Torqued down to "that-ain't-gown-owhere" lb/ft·rifle^2
28:02 Plugging in the MAP sensor
28:19 Injector harness back in place
28:28 Finishing intake manifold ducting
28:38 Plugging in the injector harness
28:58 Will it run?
30:40 Reinstalling cabin air filter
31:04 Conclusions