Mitsubshi Canter Diesel problem?

[bolla]

Hi I have a Mitsubshi canter 3.5 Ton on a 57 plate its done 33000 miles mainly in town driving.

The other morning after 5 minutes driving the truck went into safe mode and would not rev past 2000 rpm. I drove for a bit to find some where to park, after switching ignition off I waited 10 minutes and engine started and drove fine but the amber engine control warning lamp is on.

I took the truck to a Mitsubshi garage and had a diagnosis by computer the fault came up as

 

Leakage in fuel system

 

Instructions

Inspect fuel pipes for leaks/dirt

 

I did not want to leave the truck at mitsubshi as the cost is £89+vat an hour

I had the truck serviced and fuel pipes checked at my usual garage they did not find any problems.

 

The truck drives fine but the amber light is still on

 

I spoke to the diesel specialist today who seemed to think it could be the injectors, The injectors on this engine cant be overhauled and need to be replaced by mitsubshi (sounds expensive)

Is it possible to get the injectors tested before replacing

Any one else had similar problems

Is it possible to get the amber light turned off? Mitsubshi said it may go off on its own.

Any suggestions.

Thanks

[Stubby]

Did the fault actually say " leak in fuel system " or was it a code . I have heard that sometimes these things pick any random fault code and display it when it is not actually what it says . Could be the computer itself .......

[felixthelogchopper]

Have you had a new fuel filter fitted recently? It may be the filter or the housing if so.

[bolla]

Did the fault actually say " leak in fuel system " or was it a code . I have heard that sometimes these things pick any random fault code and display it when it is not actually what it says . Could be the computer itself .......

 

The print out states

0148; Leakage in fuel system

 

I am thinking if the truck did not have a computer I would not know anything is wrong as it drives ok.

[bolla]

Have you had a new fuel filter fitted recently? It may be the filter or the housing if so.

 

I had a fuel filter fitted and truck serviced but only after the amber light came on.

I was hoping the fuel filter would solve the problem but even then I dont know if the amber light would go out on its own.

[Gary Prentice]

Think it may be possible that the fault code just needs resetting. If there was an issue that's been sorted by cleaning, the warning light may just stay on . Search for resetting management lights on the net, some vehicles just need a sequence of turning the ignition on and off to reset the system

[treequip]

So the computer is getting told there is low pressure. It will probably be getting that information from a pressure transducer some where on the fuel pipe probably lo cated between the lift pump and

 

Could be the transducer is faulty, could be a bad connection between the transducer and computer, could be low pressure which would mean the lift pump needs looking at. Could be a pick up filter (if it has one) in the tank is blocked and causing a vacuum.

 

Whatever you do you will need a computer to re set the warning light

[gensetsteve]

So the computer is getting told there is low pressure. It will probably be getting that information from a pressure transducer some where on the fuel pipe probably lo cated between the lift pump and

 

Could be the transducer is faulty, could be a bad connection between the transducer and computer, could be low pressure which would mean the lift pump needs looking at. Could be a pick up filter (if it has one) in the tank is blocked and causing a vacuum.

 

Whatever you do you will need a computer to re set the warning light

 

Agree with above, start with cleaning and checking the obvious look at the expensive things last. I would think about teeing a simple gauge into the fuel line after the fuel pump and watching the fuel pressure as you drive you may suddenly find the pressure drop off. Make sure you dont have a tank breather pipe trapped crushed or blocked.

[felixthelogchopper]

I had a fuel filter fitted and truck serviced but only after the amber light came on.

I was hoping the fuel filter would solve the problem but even then I dont know if the amber light would go out on its own.

 

Not unheard of for the filter housing to cause problems. IIRC, there is a diaphragm in there that can split. There was a thread about a similar problem with a Ranger recently.

[GlobalNewark]

We had a 54 plate Canter & it would forever derate, stop turn off then back on & off you go. Took it to dealer but never sorted fault & nothing ever got worse, sold it like this in the end.