What happened was that i lent my car to someone, who cracked the front bar, not sure how it happened, but the mechanic said that may be the cause for the problem in the manifold... not exactly sure of the seriousness of the problem atm ... but will check it out next week...
Jetdat - hopefully it is...save a bit of money, lolz
thanks for all the replies
btw...anyone in Sydney know of a good mechanic to go to to have it checked out, i've been to fussys and got quouted 380...but he did not explain seriousness of the problem, but just saying that he needs to have the car overnight...