i tried listening with a piece of vacuum hose in my ear and it sounded to me to be from the center middle of the engine, but with all the clatter its hard to tell. its not an injector and the valve train isnt adjustable. you put the lifters in and tighten the cam, thats pretty much all there is to it. im fortunate to work in a dealership shop with a boss that doesnt care about working on personal cars. if it was in my home garage i wouldnt have even thought of pulling it, but with a lift it took me about 3 hours. put it in the air, undo everything, lower it undo everything, pull it out.


if it is the vacuum pump ramp, will it be visibly broken? ill take it out tomorrow.