Answers to your car questions
I have a 2006 Toyota Matrix, which I bought as a demo (6 or 7,000 kms) from the dealer. I had a paint protector applied, as well as an underbody rust coating. The rust coating was supposed to last for ten years and it has. The service attendant says that there isn’t any rust. The car has been serviced regularly at the dealership and has around 108,000 kms on it and is in good running order. There have been some mechanical problems that come with an eleven year old car but nothing seriously expensive. I would like to keep the car as long as possible. When I asked the dealer if I should get it rust coated again, they said that it wouldn’t be worth it. One service person said I should get it oiled and another said not to. This is why I am writing to you for your advice. Thanks in advance.
Jane from Kitchener
If no one has actually looked at the undercarriage of the vehicle, they are not in any position, as well as myself, to give you an informed suggestion as to what your car does or does not need. I would take the car to a reputable body shop and pay a small fee for them to put your car on the hoist and look to see if there are any areas of concern. Once you have done that, you are in a much better position to determine if your car might need some touch up rust protection in some areas. The body shop might find some areas of undercarriage rust that have eluded the rust protection application over the past eleven years and it might not be too late to apply further rust protection material. After that inspection, you will be in a much better position to make a determination as to what steps to take to further protect your car, if you intend to keep it for a while longer.
MARTIN NEEDS HELP
Just under two years ago, I purchased a used 2006 Sante Fe 2WD V6, 190,000 kilometers with automatic transmission. The car always started easily, runs well and doesn’t use engine oil. About six months ago, I started the car one morning and it fired up and ran for only about one second. Upon trying a re-start, the engine turned over like what seemed much faster than normal and wouldn’t start. It sounded as if the sparks plugs were removed, thus having little compression. I towed the vehicle to my local garage that is not a Hyundai dealership. I took it there because they rent that property from me, so I like to give them whatever business I can. They checked the timing belt and didn’t find anything wrong. They then removed three spark plugs and checked the compression. It was as low as 50, psi. (pounds per square inch) on those cylinders. After cranking the engine over many times, the compression built back up and the car started. It then ran what appeared to be perfectly for another six months but two weeks ago, it did exactly the same thing. Pretty much the same procedure was repeated and now it is fine again. On both occasions, it failed in the morning after it had been parked overnight. The two mechanics at my garage have a lot of experience but admit that they simply do not know what is going on and suggested that maybe I should talk to the Hyundai dealership. I have spoken to two Hyundai dealers and they were very eager to help but were also perplexed with this problem. One suggested that it might be a check valve in the tank that failed and affected the fuel delivery system but he also seemed baffled by the low compression. I then wrote to Hyundai Canada with all of the details. The response that I received was disappointing and unhelpful, suggesting that I go to my dealership. Perhaps some of your readers may have had a similar experience. Any help that you could offer would be very much appreciated.
Many Thanks, Martin .
I think that one of the Hyundai dealers were on the right track when they suggested that it might be a fuel delivery problem, after the car was shut down. If the pressurized fuel in the fuel line was allowed to enter the compression chamber through a faulty fuel injector, after the car was shut down, then that scenario would greatly reduce the compression by washing down the oil from the cylinders. Cranking the engine over would again supply oil to the cylinder and the compression would again be restored. This scenario would also cause the car to immediately shut down after being started because of the lack of fuel. I will ask my mechanical readers for their opinions as well.