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Jan 12, 2015 20:23:33 GMT
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Hi, Ive got a mk2 fiesta 1.4 CVH which today has started to work itself, it wont now idle on anything less than half choke. If i try to put the choke in the engine splutters and dies. I can keep it going by keeping the throttle down or by having the choke half out. Ive checked for vacuum leaks etc in the air intake and cant seem to find anything visibly wrong... does anyone have any ideas?? as sadly its busses until i can sort this!
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1988 Ford Fiesta 1.4L
1971 Triumph Toledo 1300
1989 Ford Escort 1.4L
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Jan 12, 2015 20:48:27 GMT
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possibly the idle control valve, To the right of the carb (as you look at the engine from the driver seat), there's a little electrical wire that powers the idle valve, Its a 13mm nut to undo and it should move freely any major sticking and its fluffed
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Jan 12, 2015 20:57:02 GMT
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thanks, ill certainly have a look at it. Ive been told it might be symptomatic of a blocked jet too
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1988 Ford Fiesta 1.4L
1971 Triumph Toledo 1300
1989 Ford Escort 1.4L
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Jan 13, 2015 17:08:06 GMT
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The choke fuel is supplied by a sepperate jet to the main one, hence why its running on choke as its over riding the main jet supply, With someone holding the throttle open squirt a jet of carb cleaner down it, any grey/white smoke should clear after a minute or two. If after that it fires but doesn't run the i'd go for the ICV as above. Modern fuels are notorious for harming brass carb jets so try running a lead replacment additive
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Jan 13, 2015 18:39:24 GMT
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Take the airbox off, get the engine running at about 2000 RPM, put your hand over the air intake 'till the engine nearly dies, repeat 2 or 3 times & it should clear any blocked jets.
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thanks for the replies! Turns out it was some sort of blockage in the jets, took them out and cleaned them and it ran perfectly... i fitted an in-line filter too just to try and prevent it happening again
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1988 Ford Fiesta 1.4L
1971 Triumph Toledo 1300
1989 Ford Escort 1.4L
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