View Single Post
Old 06-10-2015, 01:14 AM   #4 (permalink)
2009Toyotoad
09 Toyo Yaris HB (Huevos)
 
Join Date: May 2015
Location: Bay Area Calfornia
Posts: 78
Thanks: 2
Thanked 13 Times in 9 Posts
Sounds like a minor vacuum leak at the intake manifold. It should be more apparent on lean burn cycle. Try a fresh gasket at the head. and check the TB gasket, because that one the leak should be very apparent and visible.
  Reply With Quote