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Old 09-04-2004   #1
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engine idles irratically and lacks power!

i have a fiat punto mk1, ran smoothly when first had but now come to a problem. my car will rev on its own and lacks power. the engine managment light doesnt come on and no fault is shown when put on a scanner. does/has anybody had this problem. does anyone no how to solve this problem i would be most grateful for any help because its really p*ssin me off now.[:(!]
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Old 10-04-2004   #2
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It could be a number of things, from the air filter being clogged, the spark plugs could be worn out, or a vacuum leak at the inlet manifold. To expensive stuff like poor cylinder compression, incorrectly tensioned timing belt, or worn camshaft lobes.

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Old 10-04-2004   #3
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welcome to the forum:)

common things on mk1 are lambda sensor, and coil packs.

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Old 10-04-2004   #4
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Sound to me as you have a bad air leak! :D
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Old 10-04-2004   #5
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to find air leak, get a tin of spray carbretta and fuel injector cleaner, spray it around the inlet manifold and throttle body, if the reves get higher you have found the leak;)

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Old 10-04-2004   #6
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lol, genius *lil light bulb comes above daves head* :p
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Old 19-04-2004   #7
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found the problem! it was the carb gaskets leaking and the stepper motor wasnt working!! thanks for all the help!!!!
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Old 20-04-2004   #8
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I have a similar problem.. on a Mk2 1.2 16V, it does funny things
when Idling... it never revs up.. it sort of revs down to 400-500rpm
and then back to 850ish ?
Not sure what is wrong yet...
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