11 00 039 Checking compression of all cylinders (M60 / M62 / M73 / S62 / M54)

WARNING: This page is about a different variant/trim than selected.

NOTE:

For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required:

IMPORTANT: High tension - mortal danger! Cut off power supply to ignition coils (disconnect plug connection at DME control unit).

Necessary Preliminary Tasks:

Connect charger or a second battery.
Read out fault memory of DME control unit
Pull fuel pump relay or fuel pump fuse.
Start engine and allow residual fuel to drain out (pressure reduction). Remove all spark plugs.

IMPORTANT: Check Schrader valve on special tool 11 0 226 for tight fit.

Screw special tool 11 0 226 by hand into spark plug thread and connect special tool 11 0 224.

NOTE: Check that sealing ring is in perfect condition.

Fig 1: Checking Schrader Valve On Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.

Depress accelerator and actuate starter until compression stops rising.

Compression pressure, refer to ENGINE IN GENERAL .

Fig 2: Identifying Special Tools 11 0 224 And 11 0 226

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Now clear the fault memory.