Mitsubishi triton 4m41 engine diesel

SOURCE: Loss of Power from a Mitsubishi 1.9 DiD engine

Hi, check the air filter. Have helped friends in the past who have poor running vehicles that have been regularly serviced by a garage. I looked at them, found the air filter black with dirt....totally clogged up....never been changed since new!!! Many garages seem dont seem to bother changing it when they should!!! Cars need air to work (more air than fuel) so try this. Paul

SOURCE: Hi, I have an 03

hello mate if it has got lack of power it could have a split vacuum hose on the turbo actuator and there is 5 or 6 hoses at the back of the rocker make sure they are all ok and not split. it sounds like u have no boost so it would put a malfunction in the ecu cause the the boost pressure sensor would be reading incorrectly. 

SOURCE: 98 mitsubishi mirage misfire or fuel prob

change the fuel pump relay

SOURCE: 4M40 engine lacking power and blowing black smoke.

http://www.delicaclub.com/load.php?id=20

Install the egr mod, will stop it smoking in no time
Delica owner...

SOURCE: I have a 1992 Mitsubishi Mighty Max v6 3.0. It

Yes, the computer does retain fault codes. They can be retrived either with a scan tool or by using an analog volt meter. (Good luck finding one of those if you don't already own one.)
Volt meter method:
Find the diagnostic connector located next to the fuse lock under the left side of the dash
Connect the positive lead of the volt meter to pin 1 on the diagnostic connector.
Connect the negative lead to pin 12. Turn the ignition switch on and disclosure of the ECM memory will begin.
The ECM will output 12 volt pulses. There are long pulses and short pulses. The long pulses count as tens and the short pulses count as ones. Example: 3 long pulses and 2 short pulses means code 32.
If there are 2 or more fault codes in memory, they will be output one at a time in order of the code number from lowest to highest.

Code Description
_____________________________________________________
11 Oxygen Sensor or Circuit
12 Airflow Sensor or Circuit
13 Intake air Temperature Sensor or Circuit
14 Throttle Position Sensor or Circuit
15 Motor Position Sensor or Circuit
21 Coolant Temperature Sensor or Circuit
22 Crank Angle Sensor or Circuit
23 Top Dead Center Sensor or Circuit
24 Vehicle Speed Sensor or Circuit
25 Barometric Pressure Sensor or Circuit
41 Injector or Circuit
42 Fuel Pump Control Circuit
43 EGR Temperature Sensor or Circuit