[Roadster]

Looking over Marc's papers on the TB, apparently the info mentioned in his
Throttle Body Service page points more to a vacuum leak for me, rather than the TB itself. There have also been other members who have stated the same thing.
And also learned something else on this read, and that is, that Dag is not used on the primary throttle blade.


Just for clarification, the sentence below was JMO, was not read anywhere...
Of course the leak can be so minor and only occur when the engine goes in Closed Loop.
I think a gasket change is in order and a complete check of every line.
I also need to find a 1/4" drive T-40 or a thinner 3/8" drive T-40 socket when torqueing down the plenum bolts. There are 2 bolts, 1 on each side of the plenum between the runners, that is very tight to get in there. I had to use a 6mm Allen key and a spark plug socket to go over the Allen key for leverage with a short extension and the 3/8" ratchet to break 1 of those bolts loose.
So if anyone knows where I can get a thin walled T-40, it would be appreciated.

Found an extended Torx set in 3/8" drive that will work perfect....