Hyundai Tucson 2.0 Diesel Auto (2WD) 2007 - Diesel engine cutting out

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Wed 9 Jul 2014 21:36
Hyundai Tucson 2.0 Diesel Auto (2WD) 2007 - Diesel engine cutting out - Johnxair

About 18 months ago, the car refused to start. It would fire, but splutter & die before reaching idle speed. After about 20 attempts, it started & ran normally. Several days later it cut out while on the move & refused to restart. Again after a number of attempts, it started & ran normally. At this point we asked our local garage to take a look. No fault codes had been recorded, so they suggested a mechanical cause such as the diesel lift pump.

I removed the pump from the tank & stripped it. Everything was spotlessly clean, with no sign of sediment, water or corrosion etc. On reassembly the car ran perfectly and didn't miss a beat until a month ago, when it cut out on me in the middle of a busy roundabout. Again it took two dozen attempts, with the engine coughing & spluttering below idle speed before it suddenly ran normally. I dismantled the tank pump for a second time, again finding no obvious cause. Afterwards the car was perfect until today......you guessed.....an exact repeat performance!

Some history: Mileage is 65,000 and we bought it 2 years ago at 51,000. At that point it had a full main dealer service history, last visit 48,000. I've done my own servicing since, but I haven't yet changed the diesel filter......this may be a sensible next move?

Please let me know if you have any suggestions. Thanks. John

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Wed 9 Jul 2014 22:00
Hyundai Tucson 2.0 Diesel Auto (2WD) 2007 - Diesel engine cutting out - elekie&a/c doctor
Sensible next move,change the fuel filter.I. Would do this before anything else on a diesel with starting/running problems.
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Wed 9 Jul 2014 23:28
Hyundai Tucson 2.0 Diesel Auto (2WD) 2007 - Diesel engine cutting out - Peter.N.

I would second that.

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Wed 9 Jul 2014 23:34
Hyundai Tucson 2.0 Diesel Auto (2WD) 2007 - Diesel engine cutting out - RobJP

You say that you've done your own servicing, but you've neglected to change the fuel filter.

The saying of "If a job's worth doing, it's worth doing properly" comes to mind.

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Thu 10 Jul 2014 00:09
Hyundai Tucson 2.0 Diesel Auto (2WD) 2007 - Diesel engine cutting out - focussed

If it's done 65k miles and was dealer serviced before you got it, there is a very good chance that the fuel filter has never been changed, the symptoms of the breakdowns seem to support a diagnosis of the fuel filter getting to the point of being unable to flow enough fuel to keep the engine going.

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Thu 10 Jul 2014 00:31
Hyundai Tucson 2.0 Diesel Auto (2WD) 2007 - Diesel engine cutting out - Manatee

You say that you've done your own servicing, but you've neglected to change the fuel filter.

The saying of "If a job's worth doing, it's worth doing properly" comes to mind.

Perhaps the fuel filter wasn't scheduled for changing between 51000 & 65000?

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Thu 10 Jul 2014 07:32
Hyundai Tucson 2.0 Diesel Auto (2WD) 2007 - Diesel engine cutting out - gordonbennet

Fuel filter (and many other servicing requirements) shedules are for a perfect world, our MAN lorry filter schedule has been brought forward from the makers plan, roughly halved, due to fuel problem messages appearing regularly on the dash of all.

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Thu 10 Jul 2014 18:35
Hyundai Tucson 2.0 Diesel Auto (2WD) 2007 - Diesel engine cutting out - Johnxair

OK.....today I changed the fuel filter. The old cartridge had a date code of August 2010, so would probably have been fitted at a service done in Jan. 2011 at 38K miles, hence well due for a new one!

Lets see if cuts on me again. Thanks for your help so far.

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Tue 15 Jul 2014 23:06
Hyundai Tucson 2.0 Diesel Auto (2WD) 2007 - Diesel engine cutting out - Johnxair

The fault is still there. It let me down again today. I've got a few more observations which might help....

1. When it cut on me today & I tried to restart, the revs initially went to 800 before dropping to 500-600 spluttering up & down, then faltering & dying. It didn't matter whether I tried another start immediately, or waited a while.

2. On every occasion, except once, the problem has occurred when slowing down to a roundabout/traffic lights AND around 5 minutes into a journey. It has never cut during a long journey nor when at cruising speed.

3. Ambient temperature doesn't seem to affect it. The problem has happened from freezing to high 20s.

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Sat 16 Sep 2017 17:42
Hyundai Tucson 2.0 Diesel Auto (2WD) 2007 - Diesel engine cutting out - Eric Walton

Hi JohnDid you ever get this sorted out ( and can you remember what it was if you did )
My experience is like a carbon copy of yours, in every way, including the roundabout.

I know this is an old post, but you may be able to help, ive tried everything also.

Cheers

Eric

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