My engine jerking

AbangCorp · Post by **AbangCorp** » 24 Aug 2010, 13:15

Dear All,

I have a very bad jerking (something like miss fire & loss power) and cause my bracket to crack - it is made with aloy

now I have replaced it, the jerking is still there
what I suspect now is my injector is blocked or my fuel pump is giving me a problem now

what do you guys think?

I suspect my bettery is low --> alternator not charge the batt enough due to belt is worn --> wheel arch cover is missing & dirt, water is attacking my aux belt

Thanks

Citroen Xantia 1.9 TD '95
VIN VF7**************[VIN obfuscated, can be read by forum staff]

spider · Post by **spider** » 24 Aug 2010, 13:18

If its specific to one cylinder, its injector or valve issues I would say.

Battery does not make a lot of difference really with a indirect injection diesel, as the only 'power' needed is to hold the stop solenoid open (and possibly control the pump timing a bit) , although it will probably run reasonably well with < 9v (nothing else would work but I doubt it would stop)

AbangCorp · Post by **AbangCorp** » 24 Aug 2010, 13:26

Now you give me more symptom idea

I do think it is one specific cylinder, sometimes it is a one silent jerk
and then another one big, sometimes continuously

there is no specific speed when it happend
the best part is, my car engine stopped

spider · Post by **spider** » 24 Aug 2010, 13:56

I'd go with an injector, valve problems (usually!) will be happening all the time or not.

Intermittent is more likely injector, although I cannot remember having had one act up intermittently, but I guess it can happen. If possible (not sure given your location) can you have them tested ?

AbangCorp · Post by **AbangCorp** » 24 Aug 2010, 22:30

Does that mean valve, a bent valve?

I also have overheating problem, but it never went over 95 degree celsius
i already have new pump, and a thermostat standby

will flush and do good cleaning to my tank

spider · Post by **spider** » 25 Aug 2010, 12:02

No, I was thinking more of the clearance being closed up too much (so in effect it does not really do much) or (unlikely) burned out.

If this was my car, I would start with the injectors as this is going to be easier than even thinking about valves.

AbangCorp · Post by **AbangCorp** » 29 Aug 2010, 02:54

it's a leaky diesel along the fuel line
what do you all think, is it possible?

spider · Post by **spider** » 29 Aug 2010, 11:30

If its leaking fuel out, it will be taking air in = poor running

That needs sorting first.