Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 108

From the previous page.
MUT-II Data list
11 Oxygen sensor
OK: Changes between 0 - 400 mV and 600 - 1,000 mV during
idling
Check the fuel pressure. (Refer to P.13D-82.)
Check the following items.
D Check the ignition coil, spark plugs, spark plug cables.
D Check the compression pressure.
D Check the fuel filter or fuel line for clogging.
D Broken air intake hose
D Clogged air cleaner
MPI -
OK
OK
OK
Troubleshooting
NG
Check the fuel pressure.
(Refer to P.13D-82.)
13D-43
OK
1. Inspect the intake of
air into the air intake
system
D Broken intake
manifold gasket
D Broken vacuum
hose
D PCV valve does
not operate.
D Broken air intake
hose
2. Check the injector for
clog.