hi guy's have just brought my 1st evo 2 weeks ago

),it a evo 3. I dont know alot about them and have got my 1st problem

, drove my car in the rain(drizzle) for 1st time got home after a 2min drive i left the car runnig went in to the house and when i came out there was blueish smoke coming out the engine bay and backbox. when driving you can smell fuel or oil and there is a slight tapping sound coming from near the inlet. have been told could be oil leak but when i placed a piece of card under the car i found no oil?????? If anyone has experenced this or might know what it could be please can you help.
benevo3