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Hi, my 2007 SF diesel has been trouble. Low power up till 2,200 revs when the turbo kicks in, then it's ok. I took it to a local garage, they couldn't diagnose, then to Hyundai who couldn't see the problem. So, I was living with it. Then, it cuts out completely.....really lumpy performance, then it wouldn't go above about 2k revs, and stalls. (it's auto). So, took it back to the local garage, they replaced the fuel filter and took off the erg. It turns over for about 2 seconds now, then dies again. Sounds like a fuel supply problem?
Anyway, I'm now waiting for it to be seen at a diesel specialist since I don't trust the main dealer. It goes in on 11th April, but, in the meantime, anyone got a clue?
Thanks
 

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It turns over for about 2 seconds now, then dies again. Sounds like a fuel supply problem?
Yes. With a diesel, all you need for it to run is fuel and good compression.....basically.

There might also be some "safety" devices that cut off the fuel pump on purpose. Since it's pretty much dead now, any competent diesel mechanic should be able to find the cause.
 

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Hi Simon,
I would say: And some electrical things for injection.
You might be experiencing the "safety" issue of the engine to even out the performance of the cylinders so the engine runs smoothly.
When one (or more) injectors become a bit clogged or produce less fuel, the amount of power from that cylinder will go down.
To even out cylinders power the fuel to the other injectors then also will be lowered, giving you a lower engine power.
So when you alsmost loose an injector, the others also will almost shut down, the engine dies.
However, this is one scenario.
Other might be loss of fuel pressure on the rail, maybe because of sticky or stuck purge valve. It is used to drain residual fuel when shutting down the engine or at over pressure.
When it stays open you cannot maintain a lot of pressure so the injectors cannot produce enough fuel pressure to overcome the compression of the cylinders so the engine goes down.
Or the fuel pressure sensor is giving bad data so fuel pressure is getting too high (purge valve) or remaining too low.
When over time a problem gets worse it eventually will stop the engine.
So you need a competent! diesel mechanic to measure up these things.
Good luck,
Paul
 

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Ok, we got the diagnosis. Egr valve was stuck open and full of sooty crap. Replaced, but now engine remains in limp mode, so they're going to Clean the particulate filter
 
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