So, a few weeks back I changed the idler pulley on my L26 '04 GT2 and after doing that we heard what sounded like a lifter tick, so I took the valve covers off and discovered sludge inside of them and on the valve train.
Per advice from here I got all the oil and coolant out, cleaned out the valve train quite well, put fresh oil and a filter in, got it all together and started it up. Still ticked, we thought we'd take it over to a mechanic friend and see what he thought, so we filled the coolant system up with water and back it up 20 feet and the ticking stopped... Drove it a few miles still no tick, shut it off, let it set for a few minutes, started it up, still no tick. So, we parked it and a couple days later I moved it and it ticked for the first 30 seconds or so, then stopped. Later I moved it to the shop and it did the same thing. Now, I've got the plenum and LIM off and besides my upper and lower LIM gaskets and VC gaskets and grommets - is there anything I should check, or take special care to clean while it's apart? I figured it just hydro-locked because of all the sludge, but why does it still do it then briefly?
Thanks in advance for any help!