surreybc
06-28-2010, 07:11 PM
I have the tube open to the atomosphere but Im hearing no exhaust noise and cant see anything coming out. It holds no vacuum at all. If I block the tube closed with my finger no pressure builds up. if i blow in the tube , it feels like blowing into a closed system. the tube is not clogged and the port at the egr tube is not blocked. I have to blow in the bpt tube to get the egr system to turn on. trying to figure out if i have a weak bpt valve or weak back pressure.