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Marty
Marty, European Car Expert
Category: UK Car
Satisfied Customers: 407
Experience:  ASE & Bosch Certified Master Tech. Over 30 years experience.
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I having probs with mitsubishi canter with a 2.8d 4m40.

Customer Question

Hi I having probs with mitsubishi canter with a 2.8d 4m40.
JA: What is the model/year of your Mitsubishi?
Customer: engine seems to run advanced only over 3000rpm in every gear, it has a mechanical fuel pump I had injectors tested they are ok he seems to think fuel pump problem piston stuck open in pump causing to much fuel ? not sure if that's cold start valve ?. Starts and runs fine until you go over 3000rpm ? 1997 non turbo
JA: Have you ever replaced the fuel pump, or is this the original?
Customer: never replaced, I have only just got vehicle on road it was stood up for a while
JA: What year is your Mitsubishi?
Customer: 1997
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: yes I have had injectors tested
JA: Anything else you want the mechanic to know before I connect you?
Customer: denso fuel pump ME125 246
Submitted: 2 months ago.
Category: UK Car
Expert:  Greg replied 2 months ago.

Hi, I'm Greg (Indy-Tech).
Welcome to JustAnswer. I'm reviewing your question now, and will post back with your reply ASAP.
Rgds Greg.

Expert:  Greg replied 2 months ago.

Have you changed the fuel filter ,seen this cause this problem many times .

Does thre exhaust smoke black or gray when you get to 3000rpm.

Greg

Customer: replied 2 months ago.
HI THERE IS NO SMOKE
Customer: replied 2 months ago.
having probs with mitsubishi canter with a mechanical fuel pump. engine seems to run advanced only over 3000rpm in every gear, it has a mechanical fuel pump I had injectors tested they are ok he seems to think fuel pump problem piston stuck open on fuel pump causing too much fuel ? not sure ifthat's cold start valve ?. Starts and runs fine until you go over 3000rpm ? 1997 non turbo
original fuel pump I think .
I have only just got vehicle on road it was stood up for a while
I have had injectors tested. ok.
denso fuel pump ME125 246
Customer: replied 2 months ago.
there is no smoke but rattles at 3000rpm