Question:
My Fiesta's got a lumpy idle - seems to surge up and down at tickover... Giving it a few revs will settle it down, but it seems to be getting worse eg sitting at lights after a high speed run it feels like it's about to stall. Any ideas what might be causing this? It's been properly maintained, and low mileage so I'm a bit mystified.
Answers:
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Do you have a air leak at the fuel filter or a dirty filter.Do the steel belted radial tires wear out fast than the normal tires?
I'm not an expert but it could be blocked injectorsNot the same car, but the same symptoms... I once had a Talbot Samba that the garage kept setting the idle really low to easily pass the emissions test, but it would surge the way you describe. Every time it came back from a service, I'd tweak the idle speed back up a little, and it waas happy then. This was a petrol, so have no idea if it's the same...
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no, its not the injectors... its more n ikeley down to either dirty fuel, or blocked filters..steering problem with BMW 3 series?
when you say its been maintained, by you? or by a garage? if it wasnt you that did the work, how would you know if it had been done? do you know how to check it yourself?
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diesels dont go wrong... when they do its usually terminal. as this is still running, its usually fuel related. its either the air filter, or the fuel filter... either being dirty will have similar effects...
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Injectors.Older diesels can get dirty lines and need new fuel filters. Get yours blown, new filter and all the injectors re-set.
water is slowly dripping out of the muffler!?
clog fuel filter.transfer pump giving up.
fuel line sucking air.
leaking injector
injection pump electric solenoid failing.
How much longer can this car last?
may be a few more,but, this is what I have at a glance
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I want to add that if You (personally) change the filter and You did not fill that filter to the top some air is inside the fuel system.
if that is the case then You have to purge the system following the owner manual.PRECISELY
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