Guys,I've been going through this forum and following instuctions in here for weeks on this problem.
To date I have pulled the EGR and BPT valve as well as the tube from the exhaust manifold and cleaned them. Have cleaned the connections at the silind The EGR seems to work as it opens when a vacume is placed on it. It stays open as long as vacume is applied and immediately closes when it is released. I have replaced all of the vacume hoses. There seem to be a leak in the brass tube that connects the BPT to the Air Intake so I by-passed that. The check engine light does not come on and stay on anymore. It just comes on when I accelerate and goes back off when I let off of the gas. It doesn't throw the code anymore but I still think this light still has something to do with this system. I'm trying to get it inspection ready and this is the last item on the list.
The vacume going from the air intake to the BPT does not have very much vacume on it so I ran vacume straight from the canister to the BPT valve. The engine started running rough at idle as though I were running it straight to the EGR valve. Is that normal? From what I have read, the BPT valve doesn't send vacume to the EGR until the engine gets to approx 1500- 2000 RPM.
Any ideas where to go from here would be appreciated.
EGR System Failure - 1990 240sx
Re: (squeefoo)
Yeah, I figured that out. I borrowed a jpeg from anotheer post on testing the BPT operation and added the brass tube and air intake section. I "bypassed" the tube with a vacume hose and a 't'.(not the tee in the PIC)Just did the same thing the tube is doing with rubber instead of brass.
I have the parts for sale if you want them:[email protected]
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s13sr20chris
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Re: (Chezedik)
ported vacuum(coming from throttle body not intake manifold) is always kinda weaker than the manifold stuff. no need for extra hose unless solenoid no worky.