Question 1

Why does the fuel pump of my 2009 Mitsubishi Triton buzz?

Accepted Answer

What you’re probably hearing is the pump switching on to prime the engine’s fuel system so that it starts easily and promptly. Even though the engine isn’t running, when you switch the ignition on, systems like the fuel pump all come to life to get things ready to be started and driven. When the pump has generated enough fuel pressure and volume to start the engine, it can then switch off and only switch on again once the engine is running and a constant supply of fuel is required. This could be why it only runs for a few seconds when you first turn the ignition on. This is pretty normal, but what isn’t is if the pump starts to make a new noise or the tone of its buzzing changes. At that point, what you might be hearing is wear or damage inside the pump.

Question 2

Rear passenger side wheel of my 2017 Mitsubishi Triton ute is not turning

Accepted Answer

This could be a differential problem or even something like a collapsed wheel bearing. But it’s most likely to be a seized brake or parking brake that is causing this problem. Has the vehicle been sitting around for a long time without moving? That’s a common way for brakes to seize and lock the wheel, preventing it from turning. You might be able to knock the park brake free with a bit of persuasion, or maybe crack the bleed nipple on the brake itself to let the pressure off the brake and free it. But if the brake is rusted on, then you’ll need to disassemble it to bring it back to a condition where the vehicle is safe to drive again. Even if you get it moving again, a thorough disassembly and inspection is warranted to make sure it’s 100 per cent safe to go back on the road.

Question 3

Gear stick issues with 2008 Mitsubishi Triton MN

Accepted Answer

Like anything mechanical, the gear-shifting mechanism in a car can become slack, or sloppy, over time and kilometres. Play can develop in the linkages and levers that select each gear, or in the part where the gear-shift itself is joined to those selectors. Also, the actual selectors that disappear into the gearbox and physically shift the gears can also develop excess movement or play. You can probably remove the shifter boot and centre console inside the cabin and check for looseness in the upper part of the shifter mechanism, but to check the whole thing, you’ll need to climb under the car and feel for play and look for broken clips, missing springs and worn out bushes. The good news is that it’s probably an external wear issue and not something inside the gearbox itself.

Question 4

Oil leak in my 2013 Mitsubishi Triton

Accepted Answer

A leaking rocker cover gasket won’t cause the engine to stop unless it somehow manages to allow too much lubricating oil to escape the engine (which, it potentially could over time). But it still needs to be fixed, because technically the car is unroadworthy with an oil leak and various bits of the car will be getting coated with the oil as it leaks out. Rubber suspension bushes, in particular, are intolerant of contact with oil and will degrade as a result. You might also find the leak is dumping oil on your tyres or the ground in front of them. So it needs to be fixed sooner rather than later. As for the original diagnosis of your car needing a new engine, I’d be giving that workshop a wide berth as the mechanic in question might be either incompetent or attempting to rip you off. Or both. Your decision to seek a second opinion was a good one and should be standard practice.

Question 5

What tow vehicle or hybrid camper should I consider for after retirement?

Accepted Answer

The last decade of dual-cab four-wheel-drive utes have emerged as the tow-vehicles of choice, and you see them everywhere filling roles exactly like the one you have planned. Popular models include the Ford Ranger you’ve nominated, Toyota HiLux, Mazda BT-50, VW Amarok, Mitsubishi Triton, Nissan Navara and Isuzu D-Max. But there are also cheaper alternatives including makes like the South-Korean made Ssangyong and various Chinese brands like LDV and Great Wall. Just make sure you know exactly how much you need to tow before making a decision as some of the cheaper models don’t have the same outright towing capacity and even if they do, some of them don’t have the engine performance to make towing as easy as it should be. For parts availability, the Toyota would be king in really remote areas, but any of the major brands are pretty well covered in Australia. Meantime, don’t rule out ute-based wagons such as the Ford Everest, Isuzu MU-X, Mitsubishi Pajero Sport and Toyota Fortuna. These offer better ride comfort when unladen thanks to more sophisticated rear suspensions and most have as much or almost as much towing capacity as their ute brethren.

Question 6

Can I legally change the tyre size on my Mitsubishi Triton?

Accepted Answer

Broadly speaking, the law in WA states that you can’t increase the width of a car’s tyre more than 30 per cent over the standard fitment tyre. But since you’re only going 20mm wider, that’s not an issue and shouldn’t present any legal problems. However, it would still be wise to let your insurance company know about the increase as insurers often have different standards to the actual law-makers. The only other hitch might be that the new tyre is physically too wide for the rim it’s being fitted to. Again, though, this is not a huge increase and should be viable. A good tyre shop will be able to check your rim size and let you know one way or the other.

Question 7

My 2020 Mitsubishi MR Triton has a coolant problem

Accepted Answer

This sounds like a fairly serious failure somewhere in the engine that is pressurising the cooling system (and the coolant overflow bottle) and draining the engine of the coolant it needs (which is why the overheating light is on). This can be due to a blown cylinder head gasket or some other failure within the engine that is allowing combustion pressure into the cooling system. The best advice is to not drive the vehicle any farther and get it to a workshop who can diagnose the problem properly, rather than just guessing about the cause. Don’t forget, though, that your Triton, provided it’s been serviced properly, should still be covered by Mitsubishi’s factory warranty.

Question 8

My 2003 Mitusbishi Triton will turn over but that's it

Accepted Answer

You say you’ve checked the basics, but it’s worth taking a close look at electrical connections that form the basis of the car’s ignition system. Are all the plug leads properly connected? Is the high-tension lead form the distributor to the coil secure and the coil wires correctly hooked up? Any fault with these things can cause a no-start situation. The other prime suspect in a car of this age would be the electric fuel pump. These usually live inside the fuel tank and have a very finite lifespan. If you can’t hear the pump humming when you turn on the ignition, it’s probably dead and could well be the cause of your problem. Beyond that, there are a lot of things that could be the cause here, but many of them are cheap and simple to fix once you’ve diagnosed the issue. It’s worth having the car checked over in case it is something really simple (and inexpensive). The Mitsubishi V6 is pretty good unit and if you’re happy with the rest of the vehicle (and it sounds like you are) then fixing the problem and squeezing every last kilometre out of the thing is the way to go. The confounding element, of course, is that fifth gear is getting hard to engage. This could be a simple linkage adjustment problem, low clutch fluid or it could be a worn out clutch. Again, though, a proper diagnosis should be your next step before deciding whether to repair or sell and move on.

Question 9

Why is there a ticking noise in the engine of my 2018 Mitsubishi Triton diesel?

Accepted Answer

Any diesel engine can be a bit noisy; that’s just the way they work. But if a new noise has surfaced, then something has definitely changed under the bonnet. First thoughts would be a hydraulic lash adjuster (also known as a lifter) that is failing and making the noise. These lash adjusters maintain the correct valve clearance (which otherwise alters as the engine heats up and cools down) but one that fails will allow the valve clearance to grow, at which point you get a ticking noise at the top of the engine as the valve and lifter collide. If this is the case, you’ll need to replace the offending lifter and best practise suggests you replace all of them at the same time as one failed one suggests they’re probably all worn. But it’s also important to make sure it really is a dud lifter you’re dealing with. A diesel engine has lots of potential sources for such a noise, so make sure you rule out a worn fuel pump or any other mechanical problem before ripping the lifters out.

Question 10

I can't get my 2005 Mitsubishi Triton into either two- or four-wheel drive

Accepted Answer

There are a lot of possibilities here. Either there’s a problem with the actual shifter for the transfer-case (that selects two or four-wheel-drive) or there might be something amiss inside the transfer-case itself. But before you try anything else, make sure that the transmission is in Neutral. Many vehicles will not shift into or out of four-wheel-drive while the transmission is in Drive or Reverse. So stick it in Neutral and see what happens. From memory, the 4WD selector in your ute is a mechanical lever, not one of those newer rotary knobs. So at least you won’t be trying to overcome an electronic selection problem that occurs in these later versions.

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