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What is causing my 2014 Mitsubishi Pajero to blow black smoke, jolt through gears and only go 60km/h?

Asked by Kylie

My 2014 Pajero has been regularly serviced, and recently got a new fuel filter, new tyres, new rear brake pads and a service two weeks ago. However, yesterday, the exhaust was blowing smoke, and the car would only do 60km/h with the pedal down, and was jolting in between gears. Listening to it, it wasn’t running right. It’s done 160,000 kms. Are they known for issues?

Answered by CarsGuide

11 Sep 2020 David Morley

The Mitsubishi Pajero is actually regarded as a very reliable vehicle, so your experience is not typical. There are several potential causes for this, but the thing I’d check first would be the air filter. Is it possible this was overlooked during the recent service? A blocked or dirty air filter will certainly make an engine blow smoke and operate poorly.

I’m assuming your vehicle is a diesel, so it would be worth checking the suction-control valve on the back of the fuel pump, too. Also, a stuck injector that is pouring fuel into the engine can also potentially create these symptoms. I’ve also heard of the Pajero diesel suffering from a build-up of black gunk inside the intake system that can also cause symptoms like the ones you’ve described.

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