hello all you toyota techs out there!!!!!!! Got myself a brain buster here. My 3.slow at 90K al of the sudden got a little shake at idle,not much noticable at cold start but as the rpms drop, it shakes moderately in idle but when i start to open the throtle it starts to shake more to a mifire condition and at 2000 rpms it all smooth. Checked all the standard things all seem to check ok. Have a fuel air guage and during that idle to 2k rpms guage reads lean, no codes on ecm. tomorow will chek pcv hose and valve and will do a compressin test. Plugs tips look white which definetly steers me to a lean condtion. But why? Vacuum leak!!! where, cant see one or maye some one knows of common areas to look
?. Help !!!!!!