2009 Genesis 4.6 Major Engine Problems

[Truman Gee]

My Genesis is running on 4 cylinders and giving error codes P0019, P0302, P0304, P0306, and P0308. I am being told by Hyundai that it is not worth fixing. The car has 114,000 miles and was a commuter driven 130 +/- highway miles every day. Not abused. Is this car really finished? How does this happen to such a fine automobile? This is the second time I have had majoe engine problems with ths car, first time was at 84,000 miles. I am pissed ..................

 

[Mark_888]

Hyundai usually does not try to repair anything inside of an engine, the just replace it (if under warranty). Dealer mechanics rarely have the skill level, experience, or specialized tools to rebuild an engine.

What was done at 86,000 miles when the drivetrain was still under warranty?

 

[Mark_888]

Looks the price of a new 2009 Tau 5.0 engine is about $12K, not including installation.

 

[mikec]

P0019 = crankshaft/camshaft position issue
P0302= Cyl #2 misfire issue
P0304= Cyl #4 misfire issue
P0306= Cyl #6 misfire issue
P0308= Cyl #8 misfire issue

From that, it looks like one side of your V8 is completely inactive. That could be a timing chain busted. Not sure why the dealer thinks that's "terminal." I don't know if the Tau V8 is an "interference" engine either; i.e. if the pistons are moving up and down normally (driven by the crankshaft) but the valves are NOT moving properly, will the pistons slam into any open valves or not? Non-interference engines have small divots in the piston tops, a depressed area, or some other way to make clearance so valves won't be hit by the pistons. Why does this matter? On an interference engine, if something causes the pistons & valve timing to get screwed up such that there is physical contact between pistons and valves, then valves will be bent at least and those pistons might also get damaged --> need what amounts to a cyl head rebuild at least, maybe a bottom-end rebuild too. On a non-interference engine, such "collateral damage" doesn't occur so once the original problem (e.g. busted timing chain) is fixed, the engine is whole again.

Browsing the Genesis service manuals, getting to the timing chains requires significant engine dis-assembly... ergo high labor costs. Some of the steps seem like overkill to me - because the procedure shows replacement of all chains, not just the one going to cyls 2/4/6/8.

What was the other big engine problem? If the repair involved significant engine work, it's possible some contamination made it into the oil. If an oil passage got blocked (sometimes happens from grit, bits of gasket material dropped into the oil pan, excessive sealant goop applied such that a blob fell off resulting in a rubber-ish chunk circulating in the oil) then a camshaft may have seized which will then tear up the timing chain. Or an oil passage for the chains may have gotten blocked, killing that chain. When oil has to flow around sharp corners, or sits in oil galleries with the engine hot, it'll dry out ("coking") and build up just like plaque in arteries. That was a big issue with turbos years ago until manufacturers switched to water cooled turbos (instead of relying on oil cooling) and some vehicles with the Mitsu 2.7 liter V6 engine (including many ChryCo products like the low-end versions of the Intrepid). I haven't heard of such issues with the Tau V8 but any engine can suffer these issues after an improper/sloppy repair.

I'd bypass the dealer and go right to Hyundai's regional support folks. They may be interested in doing their own analytical tear-down of your motor (since it died young) to learn "why" and if they find evidence of sloppy service they may make it right for you. Hyundai has done similar things before... depends on who you contact, their mood, etc.

mike c.

 

[homeofstone]

What symptoms did the engine have in the last 60 days? Did the codes happen suddenly? How often has oil been changed and were correct filters used? As asked previously, what was done at 84,000 miles? You may not have any internal problems. It could be only sensors and engine computer needing flashing. First, make sure all electrical connections are good regarding engine, etc.

 

[Truman Gee]

I am the second owner, so the repair last year at 86,000 miles was not under warranty. After having the engine out of the car for 6+ weeks, they finally determined that it had broken a valve spring. They did a complete head/valve job and reassembled. Ran fine until this latest incident, which was sudden. By the way, Hyundai Motors, USA did cover all but $1500.00 of the last repair. This time they are telling me to shove it.

This incident resembles a scenario I have read about where the engine was started (started fine), turned off almost immediately, then restarted about ten minutes later. On the second start it was running very rough and deteriorated within ten minutes to not running. Actually, it will start and run now, with no noises, just runs rough on 4 cylinders.

 

[Truman Gee]

I found a used 5.0 for 3,400.00. Not really considering going that route.

 

[brfatal]

I am the second owner, so the repair last year at 86,000 miles was not under warranty. After having the engine out of the car for 6+ weeks, they finally determined that it had broken a valve spring. They did a complete head/valve job and reassembled.

This happened on my car at 6,000 miles.

 

[G-216499]

Try Ebay,input make and model.A wide variety.