fuel consumption - 2014 MN

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fuel consumption - 2014 MN

Postby bogoja on Sat Aug 12, 2017 8:06 pm

HI all I have a 2014 triton having fuel consumption problems Mitsubishi has looked at it a lot of times over the last ten months and say everything is working fine they can,t figure out whet the problem is today I took of the hose that goes to the turbo from air filter started engine it started but would not rev up and after about 30 seconds engine stopped put hose back on works fine is this normal ?
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Re: fuel consuption

Postby Duck on Sat Aug 12, 2017 8:41 pm

Yes its fine. Probably best not to remove random things and start the engine. Fuel economy wise, so was the economy really good then went downhill slowly or instantly ? changed fuel filter etc. Are you guaging the fuel econmy of the computer or at the bowser ?
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Re: fuel consuption

Postby RHKTriton on Sat Aug 12, 2017 9:27 pm

Disconnecting the hose from the air cleaner will take the air flow/ mass sensors out of the loop.

Has the turbo's variable vane much been checked for free movement?

Has EGR been disabled?

Swirl flaps (assuming 2.5 has these) moving freely?

As above, has the decline in economy come on fast or did you only notice over a period of time?
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Re: fuel consuption

Postby bogoja on Sat Aug 12, 2017 9:29 pm

economy was fine till about 70 k then turbo sprung a leak was changed under warranty never been the same since have done 25 k since 12 l/100 in town ... towing 2.2 t van 19 to 20 LT per 100
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Re: fuel consuption

Postby bogoja on Sat Aug 12, 2017 9:59 pm

after original turbo was changed over the next few months it went to using what I put last post and its been like that till now last thing I was told to try was run three tanks full with two bottle of Mitsubishi additive in each tank made no difference puzzling thing is every now and then I do get good economy towing the same van I get 16 lt per 100
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Re: fuel consumption - 2014 MN

Postby paddlingfool on Tue Mar 20, 2018 10:48 am

I used to get 16 towing 2.3 ton then gradually got worse over the next year. Now getting 20 to 21, had it back to the dealers numerous times and they can't find anything wrong. Have had the manifold changed, egr blocked, nothing helps, now it has started to go into limp mode while towing on the freeway for a while.
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Re: fuel consumption - 2014 MN

Postby Dakar on Fri Aug 24, 2018 6:37 pm

My first post.

On a recent 4K trip towing a 2100kg full van, my 2014 MN consumption was over 22l/100km which I consider excessive.
I previously towed 2.4 tonnes around Oz with a Pajero at about 17.

Is there any adjustment I could cost effectively make to improve this consumption?
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Re: fuel consumption - 2014 MN

Postby colin b on Tue Aug 28, 2018 10:23 pm

I tow a Jurgens J2204 weighing 1.8 tones laden with an MN and my fuel consumption varies between 14 l/100 under normal conditions to 18l/100 punching into a howling headwind last week. I have been told that aerodynamic drag is a far bigger factor than weight in towing and goes up quite dramatically as speed increases.

The only trouble I have had is with overheating the auto transmission and I now monitor that with a scan gauge which also shows me the water temp, horsepower output and real speed. When I see the tranny getting hot under the collar I lock it into 4 and ease back to below 40hp output which is usually around 80kmh and she cools down pretty quickly. My transmission guru told me that towing that van was just too much for that tranny which makes Mitsubishi's claim of "tow 3 tonnes with a tonne in the tub" look a bit optimistic.

I am considering fitting a new muffler which Grapnel claimed will boost performance fairly cheaply without going the whole hog and replacing the whole exhaust and intake system.
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Re: fuel consumption - 2014 MN

Postby pb4x2 on Wed Aug 29, 2018 7:28 am

Check out lockup-mate and auto-mate made by M and M 4x4 for transmission overheating solutions.
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