Knocking noise

Questions specifically about a Diesel powered C3 (usually engine or fuel related problems)
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Diesel engine related problems
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My Name: SonOfAnarchy ZA

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Posts: 46
Joined: Mon Dec 03, 2012 6:24 am

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Hi guys I have a new problem with my citroen C3 1.4HDi 8v it suddenly lost power and has developed a loud knocking sound which increases with rpm, the car also doesnt have a very stable idle any ideas? I will try get a vid later tonight for you guys.
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My Name: Arfur Dent

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Joined: Sat Jul 23, 2011 3:47 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
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SonOfAnarchy ZA wrote:Hi guys I have a new problem with my citroen C3 1.4HDi 8v it suddenly lost power and has developed a loud knocking sound which increases with rpm, the car also doesnt have a very stable idle any ideas? I will try get a vid later tonight for you guys.
When you take your video, try to listen to the engine to determine if the sound it nearer the top, bottom, left or right.

Its uncommon for a knocking to also drop the power, so its not likely to be an ancillary, which does point to mechanical failure in the engine :(
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My Name: SonOfAnarchy ZA

Experienced Member
Posts: 46
Joined: Mon Dec 03, 2012 6:24 am

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Im getting my OBD2 reader later this week will see what that error is but wasnt there before i started fiddling with the injectors unsure it if its related to my issue but here is the vid as promised

https://www.youtube.com/watch?v=KqDJOHjWA6Q
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My Name: C3CAR

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Posts: 2610
Joined: Wed May 04, 2011 10:01 am
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 140000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
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SonOfAnarchy ZA wrote:Im getting my OBD2 reader later this week will see what that error is but wasnt there before i started fiddling with the injectors unsure it if its related to my issue but here is the vid as promised

https://www.youtube.com/watch?v=KqDJOHjWA6Q
That sounds terrible. I wouldn't drive it until you can identify what it is, well worth looking on the injector department. But there is also a crank pulley that makes a knocking sound. You could disconnect the axillary belt temporarily to see if it changes the sound.

You are also missing the protective cover to the battery and, more importantly, the engine ecu plugs.
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