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G'Day all and happy new year..
i managed to find the time to get up under the dash with a length of hose as Mudrunner sugested but failed to locate the culprit.
I took it back to the mechanic but got the same dont know what it is but i can spend hours looking for it if you want??frustration sets in....
this week i discided to put some injector wash in my petrol tank as i havent dont that for a long time(i dont normaly use petrol,i know i should for the lubrication benifits)
so i poured the wash in, filled up with petrol,pushed the subtank button on the dash to switch to petrol and what do you know,the noise stopped the second i press that button.
so i drove around for 30 mins switching from petrol to gas and sure enough the gas seems to be the issue,theres no discernable diference between gas and petrol except a small increase in power on petrol,the only thing diferent is the tapping noise.
So,now iv'e narrowed it down to the gas system somewhere under the dash ill take it back to the gas guys that did the service and ask them a few questions.
Ill keep you all informed as to what happens.
Steve.
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