How much pressure should come out of bpt exhaust tube? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

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.

06-28-2010, 07:11 PM	#1
surreybc Zilvia Junkie Join Date: Mar 2008 Location: surrey Posts: 359 Trader Rating: (1) Feedback Score: 1 reviews	How much pressure should come out of bpt exhaust tube? 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.