Question about 1996 Ford Escort 4 Door

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Rough idling and choke

My automatic choke engages when engine is hot,but not as much as if cold.when engine is warm and idling it revs up and down for about ten seconds then settles but idling is slightly rough

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  • deniselinney Jan 27, 2009

    i have a mk6 N reg escort si with egr valve, ive had it on a diagnostics machine and it said the car was o.k, mechanical fault, what it is, is that when i dip the clutch the car doesnt idle, it either cuts out or revs up and down,+ its like it runs on air, i can get 60 mile for £5.00 petrol not that im complaining, also when i start the car it revs to approx 2000 revs then jus cuts out again please help ive had it to a few different garages n they dont know what it is and its costing me lots of money, thanks davy jnr

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The only thing that can cause this is maybe you have a bad planium gasket but before changing this you could also have gotten some bad gas cause most gas have 12% water or more so try STP gas treatment first

Posted on Jan 03, 2009

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1 Answer

Rough idle


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chk/test yr plugs also. If it starts to break down then chk soliniod & coil as u may be getting the start of a bigger problem. yr symptoms r showing signs of an elecrical problem. rough warm ups r the signs. c/be choke sensor also causing roughness..

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1 Answer

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That would be your engine "choke" functioning. It's not a problem. The choke engages when engine is cold and shoots extra fuel to the cylinders to idle the engine up especially in cold with. Once the engine has sufficiently warmed up, the engine will idle back down.

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the choke has 3 screws to adjust the unit,the choke itself will normaly be siezed inside at the age.With a warm engine, loosen the 3 screws and turn the choke untill the idle drops.

or as i did it-with a cold engine, remove the airffilter and with the 3 screws loose on the choke press the accelerator pedal just over half so the choke is engaged and the looking inside the filter housing adjust the choke flap by turning the choke housing until the flap is 3/4 closed and tighten slightly and start the car.Do remember to check your distributor timing whith a warm engine and make sure the sparkplugs and airfilter are okay as each upsets the other.

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Hi ..... This sounds as if it's fitted with an automatic choke, as long as the revs drop when it's warm there is nothing to worry about. The indication when these start to go wrong is that the car won't start when cold ................ even then any decent mechanic can fit a normal/manual choke.

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