Citroen c4 - Citroen c4 hdi starts for 4 seconds idles and cuts

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Wed 13 Jul 2016 23:22
Citroen c4 - Citroen c4 hdi starts for 4 seconds idles and cuts - Land Rover garry
Hi all new to this!
Had a can belt change done by a friend of mine (trusted and a good guy) but after what seems the normal bleeding issue it will start perfectly but will idle for 4 seconds then stop won't Rev the crank sensor has been replaced we have Han it with out the dpf and checked the egr valve all ok. We are at a loss it sounds perfect but just won't stay running.
P1351 code checked relay and fuse for heater plugs all ok and fuel delivery pressure is also ok.
Need some help please
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Thu 14 Jul 2016 10:41
Citroen c4 - Citroen c4 hdi starts for 4 seconds idles and cuts - Peter.N.

My first reaction would be fuel starvation, when you say delivery pressure is OK is this to the pump or injectors? Have you had a Lexia on it? The usual reason for the engin cutting out is low rail pressure.

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Thu 14 Jul 2016 11:01
Citroen c4 - Citroen c4 hdi starts for 4 seconds idles and cuts - hardway

Agreed.

Can your scan tool read live data?

Preferably in graph form,

Check the fuel rail pressure.

And an injector leak back test wouldn't hurt either.

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Thu 14 Jul 2016 11:20
Citroen c4 - Citroen c4 hdi starts for 4 seconds idles and cuts - Land Rover garry
It's not been a Lexie but is now at another garage so hoping this works out better, it was live data not in graph form but it only run for 4 seconds but thinking about it I bought a fuel filter but didn't fit it could this be the cause?? Thanks for the help.
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Thu 14 Jul 2016 21:04
Citroen c4 - Citroen c4 hdi starts for 4 seconds idles and cuts - hardway

Only reason I use graph form is it's real easy to spot a dip in rail pressure.

It can be sitting at 180-200 bar and almost a falt waveform until it collapses to zero.

Or on a Peug I had in once,

same engine,

the graph showed dips in the trace that got worse graually until stall.

Just a personal choice but graph just shows more than numbers.

Oh and the Pug turned out to have a heat related injector fault.

It would run for almost the exact same amount of time before stumbling then stalling.

Graph showed the fuel pressure trace dipping in time,

Injector leak back test confirmed one injector going faulty from engine/injection heat until the injector cooled down enough to start working again.

Fun one that was!

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Thu 14 Jul 2016 11:21
Citroen c4 - Citroen c4 hdi starts for 4 seconds idles and cuts - Land Rover garry
Pump not injectors
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Thu 14 Jul 2016 23:39
Citroen c4 - Citroen c4 hdi starts for 4 seconds idles and cuts - Peter.N.

The fuel filter could well be the problem if its not been changed for a long time. A problem I had with an early C5 was the pressure regulator on the back of the HP pump but don't know if yours is the same engine.

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Wed 10 Aug 2016 20:39
Citroen c4 - Citroen c4 hdi starts for 4 seconds idles and cuts - Land Rover garry
All,
So found the problem basically when the aux stretch belt was fitted (not buy me!!) the engine had been rocked back and forth to fit aux belt, this has resulted in the exhaust cam jumping two teeth thus sending exhaust gas back in to inlet manifold causing engine to cut out.

Replaced a very worn timing chain and tensioner and refitted all that the garage removed and it now runs like a dream,

Thanks for your help
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