Problem with car - either injector or timing.

padunne · 26-05-2010 12:08pm #1

Hi All,

My citroen xsara snapped its timing belt in janurary due to water pump freezing. No damage to valves apparently as she is valve free or something and I have checked compression and it is 100%. Any ideas what is wrong as it is slighty jerky/lacking power from idling to 1600 revs. Mechanic says timing is good and reckons it could be injectors. Also it passed the nct recently so it is running sound but just shakes when idling and is very annoying.

Thanks for any help.

Row · 26-05-2010 12:43pm

What engine has it got...??

JabbaTheHut · 26-05-2010 12:47pm

Donno about the Xsara, but it's possible that when the belt snapped because the water pump refused to move, some of the pullys may have moved on their slots where they're bolted to their respective shafts. The timing would look fine on the belt, pullys would line up, but the shafts may be out of timing.

padunne · 26-05-2010 1:09pm

Thanks.
It's a 1.4i Vsx model.
The pulley explanation might explain the problem as the car feels fine at higher revs or below 60mph. Thing is once you pass 60mph till 80mph the car shakes again worse than idling. Balancing tracking etc are all fine its just i'd like to fix the problem if I could before selling on the car.

One mechanic said it could be injectors and I am considering changing fuel filter and plugs to see will this fix the problem.
Any thoughts?

JabbaTheHut · 26-05-2010 10:37pm

Always worth a try. Dodgy plugs can play havoc with the way an engine runs.

As for the shaking between 60 and 80, that doesn't sound like it's engine related. Did you have the rear wheels balanced too? If the car is affected by speed the way you describe it, it usually means it something to do with the suspension, be it shocks, bushings or tyres.

padunne · 27-05-2010 7:46am

I thought that myself but seen as the problem only happened after the timing belt snapped and was replaced I ruled it out. She also shakes slightly at idling in traffic etc so that is why I reckon it is engine related. Tbh i'm not sure whats wrong and most mechanics cannot fully pinpoint it either. I've been driving it sound ever since just for the annoyance factor and as it passed nct i reckon i'm safe enough doing it.

Problem with car - either injector or timing.

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