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ken99 -> RE: Timing chain tensioner (4/27/2008 10:02:17 AM)
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quote:
Is the timing chain tensioner an issue on the 2007 Sonata?
Possably. The attachment is the initial TSB issued by Hyundai on this matter in October, 2006. It indicates the problem can exist in both 2006 and 2007 model years maunfactured up to August 4th, 2006. So early 07's may be suspect if the start up noise exists. Unless your new Sonata is showing symptoms of this problem, I doubt Hyundai will take corrective action.
[image]local://upfiles/4972/253869A493B54BA6A71EA4184C0A3A4B.jpg[/image]
There have been a couple of revisions to this TSB, mostly discussing diagnosis and replacement procedures. The latest TSB to address this issue (#08-EM-001-1) is 13 pages long. These can be found on the Hyundai service site at http://www.hmaservice.com/.
quote:
Also my V6 engine is covered with powdery white dust. I assume it's oxidized aluminum. Have any of you had to clean this off of your engine? What did you use?
I've seen this on used cars I've purchased that came from Minnesota and Michigan, both of which are states that salt the roads quite heavily during the winter. I power washed the undersides of both cars, but used a garden hose to just rinse off the engines and transmission cases being careful not to force water into ignition components. Over time the white discoloration has turned a dark gray or black. Neither engine has shown any long term problem from this. The Minnesota car has had several electrical wiring failures from what usually appears to be corrosion at exposed connectors (mostly lights). The Michigan car has turned out to been very reliable.
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