Smoke gets bad on acceleration
Q: My 2010 Mitsubishi Triton GLX-R blows lots of black smoke. Someone told me it blew lots more when I accelerated after stopping. What could be causing it? Steve, e-mail. A: You don’t say if the engine is a petrol or diesel but I’m guessing it’s a diesel.
If that’s the case, it’s likely to be excessive fuel, which could be an injector problem or a fuel pump issue. Get it to a diesel mechanic who should be able to sort it out.
Q: Once or twice a week my 2010 Hyundai ix35 seems to momentarily drop out of gear when accelerating from a stop.
It seems to be near the 2-3 shift point, and the engine jumps at least 2000rpm before grabbing drive again. My dealer has been trying to solve the problem without success as they cannot re-create the event.
I’m concerned that picking up drive again from an overspeed event will eventually damage the gearbox. What should I do?
Ray Tierney, e-mail.
A: It’s always hard to find the cause of a problem you can’t witness first-hand so the only thing you can do at this stage is persist with the dealer and hope they can track it down for you.
In the meantime, note every instance of the issue, recording time, place, circumstances, engine speed and gears so you can give the dealer the maximum amount of information possible.
Q: My 2008 Nissan Navara STX needed injectors at 70,000km and it was done under warranty.
They needed replacing again at 104,000km but this time, Nissan wanted the injectors sent to an independent company for assessment.
It was found that three injectors had excessive leakage and all needed to be replaced. Nissan offered to pay for half the injectors, which was $1354.64.
That left me to pay the remainder, including the independent testing at $2500. I think this is unfair and I am pursuing Nissan for the full payment.
Are injector faults commonwith Nissan? Kevin Maxwell, Carrum Downs, Vic. A: Worn injectors are quite common on most of today’s diesel engines whatever the make of the vehicle.
That Nissan has already replaced some injectors under warranty on your vehicle and has offered to pay half for the second set suggests there is an issue.
I would suggest you talk to a diesel mechanic who could give you more detailed information about the issue.
Q: I’ve read some stories where Grand Cherokee owners complained about a clunk in the gearbox.
Do you know if they were referring more to the shifting of gears being hard?
From new, my Jeep when stopping for a small period say after fuel stops, once taking off again it would always clunk or change hard through second to third. Just for the first change after takeoff, then it was fine.
At the 12,000km service they couldn’t fault it.
At the 24,000km service they told me the oil level was low and that was the cause. They were correct, it did somewhat fix it but I still get a clunk when I accelerate and if I back off coming to a stop it would still change up and clunk into a gear.
Sometimes even under normal driving/acceleration it would do the same.
The Jeep has now done 50,000km in 18 months and it’s still there. Do you think it’s the issue others have complained about? Joe, e-mail. A: It’s possible but it’s hard to say for sure. We’ve contacted Chrysler about another vehicle that’s exhibiting the problem, and we’re waiting for their reply.
We might be able to give some idea of the cause once we hear from them.
Q: I have had to replace a number of the ignition coils onmyVZ Commodore wagon over the last six months. The ‘‘check power train’’ warning alert activates and the car starts running roughly.