Hmm i posted this on Google groups but no-one replied... maybe they hate Aussies..... they never reply to any of my questions. HMMM anyway, here is my dilemma: I have a commodore VK station wagon and all of a sudden its making this tapping sound. I have had a couple of people look at it and they are not sure what it is. My mate was over and we changed the rocker cover gasket (it was leaking sooo much oil) and gave the whole thing a service with new plugs etc. He couldnt explain what the tapping was. We put in this "anti tapping" fluid when we changed the oil but that made no difference. The tapping is consistant and loud. It speeds up when i accelerate but I cannot hear it when i am driving. The mechanic over the road saw us servicing the car and we asked him what the problem of the tapping could be. He listened to the engine (screw driver method on certain spots) and he narrowed it down to around the manifold area behind the carbi, but thats the best he could do on the spot. He removed things like the oil cap and the noise remained the same volume. Any suggestions...... And if so... on the cheap side of things!! email: email@example.com Damien.