Car jerking

Hi all,

I've registred this forum as a last resort since no one seems to find the problem on my girlfriend C3. The problem is what I suppose Englishman calls car jerking (sorry, I'm Portuguese and not an English native speaker).

Simply put, the car seems like it has "kangaroo diesel" in it most of the times when taking off in first or when hitting the gas on 2nd or 3rd gear after a slowdown. All motor mounts are fine and the car has just left the mechanic with all injectors cleaned, all shims, injector cable and plugs replaced but the car still jerks, although a bit less.

If anyone already experienced this same problem or has any insight about this issue and could share a light on it I would be very appreciated.

Thank in advance.
Alex

Hi Alex, welcome to the forum.

naavt wrote:The problem is what I suppose Englishman calls car jerking

Yes, "kangaroo diesel" - a good description.

naavt wrote:all shims

I don't know what these are on a C3 Diesel.

naavt wrote:If anyone already experienced this same problem or has any insight about this issue and could share a light on it I would be very appreciated.

I have not had this problem myself. But if I had to diagnose it, my first checks would be to find out if its a mechanical problem (like engine mounts) or a fuel/engine related problem (like injectors). I use the lexia clone tool or possibly a cheap OBD type reader to see the error codes generated by the engine.

If there are no codes, check the battery connections and the battery earth and power connections. Try the car again and check for faults. No faults and the battery supply is OK, then its probably mechanical.


There is a topic covering the lexia/diagbox tool here https://citroenc3owners.com/citroen-c3-t ... -t655.html.

hello my wifes car had a similar problem when setting off and approx about 2000 rpm the car kangarood until momentum picked up and then all was fine now on my wifes car was a 2003 1.4 hdi with the non electrical egr valve i took the egr out and gave it a damn good clean and that resolved the problem its not a overly hard job just space is a bit limited. thats what id do next.

https://citroenc3owners.com/diesel-citro ... t1036.html