Fiat Punto idle problem weird noise high fuel consumption with recording

Car: Fiat Punto
Variant: 1.2 8v
Model Year: 2005
Categories: Running Rough, Starting & Power Loss
I have a fiat punto 1.2 2005 8v model yeah it is my first car but since a month or so now i have this problem where if the car is on idle the revs drop and bounce back up and the car makes a weird noise. and i think its due to this that my fuel economy has been halfed =S

ive changed the throttle body and ignition leads as i heard they were pretty common.
any ideas plz?

heres a little recording of the noise if it helps

[URL=http://tinypic.com/r/3589jeb/5]View My Video[/URL]
Posted: Oct 18, 2013 (11 years ago)
sorry heres the link
http://tinypic.com/r/3589jeb/5
Posted Oct 18, 2013 (11 years ago)
Is it misfiring,possible coil pack,any codes logged to help you?
Posted Oct 18, 2013 (11 years ago)
nope not misfiring and no codes either =s
Posted Oct 18, 2013 (11 years ago)
Check trimming is correct.
Posted Oct 19, 2013 (11 years ago)
Check for air , vac hoses / pips leaking and timing is correct and hasn't jumped .
Posted Oct 19, 2013 (11 years ago)
how can i go about checking for vac leaks?
Posted Oct 20, 2013 (11 years ago)

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