Worn injectors a turn-off
My 2009 Kia Sorento 2.5-litre diesel auto intermittently looses power. When it happens the engine still runs but will only do about 20km/h. The only way to cure it is to stop and switch off the engine and restart; everything is then OK. The car is still covered by a five-year/ unlimited kilometre warranty. The dealer replaced the speed sensor but Kia said the car was out of warranty. After some argument they changed it under goodwill but the problem continues. Now they say the fuel injectors are the problem and need replacing (but not under warranty) as they say bad fuel is the cause. It seems this is a common problem with Sorentos and can be caused by various problems. I have also read of a problem with the lining of the fuel tank breaking down and clogging the injectors. What do you think? Should it be covered by warranty (which ends in July)?
Brian Parker, email The car was going into limphome mode when it was losing power, that’s why the speed was limited. Turning the engine off and restarting reboots the computer. That suggests there was an electronic problem, so replacing the speed sensor would seem valid. I wouldn't have thought blocked injectors would cause the engine to go into limp-home mode. That’s a different issue. Worn injectors are a regular problem on modern common-rail diesels, whatever the brand, and replacing them is the way to go. Check your warranty documents to see whether the injectors are included in the consumables list. If they are, they probably won’t be covered; if they aren't you might have a claim. At best Kia might come to the party with part of the cost of replacement.
I bought a Toyota Prado Power vacuum: A reader’s Kia Sorento is causing headaches 3.0-litre GXL common-rail turbo diesel in 2006. On towing duties about a year later, the motor began to rattle. Over the next few years the rattle continued and I reported it to the dealer on successive services. They could hear the rattle but thought it was normal. In mid-October, we had the sump taken off and the oil pipe checked and cleaned out. That was when the dealer found that the No. 1 fuel-injector was leaking and the car needed four new injectors. They contacted Toyota to inquire if this work could be done under warranty, as the problem had been known since 2007, but it was declined. The cost of the work was $3336.25 and two weeks without a car, one week for Toyota to decline the service manager’s inquiry and one week to have the work done. For the first time since 2007 the engine doesn't rattle. Is this just a coincidence?
Barry and Dawn Gilbert, email No, its not a coincidence. The faulty injector is likely to have been the cause of the rattle all along. If you still have the records of your previous reports to the dealers about it, you could possibly mount a case with Toyota for compensation.
GIVE US A BRAKE
My wife’s 2011 Subaru Impreza has done just 30,000km and we were told at the 30,000km service the front discs were warped and needed to be machined. We were told this wasn’t under warranty. The car has only been driven on country roads. Is this reasonable?
Mark, Traralgon, email Brakes are not covered by the warranty; they are considered consumables that wear out as a matter of course. That they need machining at such low kays is frustrating. Have you thought about asking the dealer to show you the discs and justify their opinion they actually need machining?