gen2: (ignore mono port sparts) http://www.fixkick.com/EGR-Gen2a.html
NOX is super high.
NOX is lowest only if , 2 things happen, EGR does first half. and 3 way cat does 2nd, so most be a 3 way cat. (is it 3 waY0
ARE YO SURE THE 4 QUAD PORTS ARE FREE FLOWING? NOT RESTRICTED?
that crude stall test, must be done on hit engine 800rpm the push the diaphragm fully in, vacuum tool is best, as by hand rear or #4 intake runner, rear , EGR burns hand,
pump the EGR to 15 to 26inches HG see if it holds engine off, in not the diaphragm is bad. leaks, then pump it running, and at 800 hot idle the rpm goes to 400 rpm. (what did you get) RPM
if not the quad tubes are packed.
the intake manifold is tough cookie, it has egr S band at port 4, if packed will not let the egr flow from the EGR head tunnel (9mm? hole)
The other pain is the cat (3way pain 1) and the back pressure form the CAT is what pulses (#4 exh port) pulses the EGR mod valve,(bark tube i call it) this pulse can be weak for many reasons.
one is the wrong cat (1600 CC cat, is best ) not 6000 CC huge v8 engines cats will not work here.
the PSI pulse is about 1 PSI, if wrong cat used, the plus is way less and the mod valve may fail.
the EGR ports in the TB must be all clear, so the porting of vacuum works right.
this ported vacuum reaches the MOD
I dont like this movement over 2500, that can no be right, hot engine, and off idle
we have the curve here. (note it is load controlled and not rpm) so testing is super hard, to get this.
![[Image: egr-gas-profile.JPG]](http://www.fixkick.com/sensors/egr-gas-profile.JPG)
the VSV works or the valve EGR main will be dead.
vacuum lines routed wrong,
make sure the vents on the mod top are clean and the vent port is not packed in crap or the mod valve will be dead or weak.
the silly spin tires rule on this car may apply,
out of suzuki book and tracker,geo (may not be true on canada ecu or some very early 92 ECUs) (but if EGR moves parked, wheels on ground, this is not true below..
http://www.fixkick.com/sensors/EGR/90-95/cal-egr-51.JPG
NOX is super high.
NOX is lowest only if , 2 things happen, EGR does first half. and 3 way cat does 2nd, so most be a 3 way cat. (is it 3 waY0
ARE YO SURE THE 4 QUAD PORTS ARE FREE FLOWING? NOT RESTRICTED?
that crude stall test, must be done on hit engine 800rpm the push the diaphragm fully in, vacuum tool is best, as by hand rear or #4 intake runner, rear , EGR burns hand,
pump the EGR to 15 to 26inches HG see if it holds engine off, in not the diaphragm is bad. leaks, then pump it running, and at 800 hot idle the rpm goes to 400 rpm. (what did you get) RPM
if not the quad tubes are packed.
the intake manifold is tough cookie, it has egr S band at port 4, if packed will not let the egr flow from the EGR head tunnel (9mm? hole)
The other pain is the cat (3way pain 1) and the back pressure form the CAT is what pulses (#4 exh port) pulses the EGR mod valve,(bark tube i call it) this pulse can be weak for many reasons.
one is the wrong cat (1600 CC cat, is best ) not 6000 CC huge v8 engines cats will not work here.
the PSI pulse is about 1 PSI, if wrong cat used, the plus is way less and the mod valve may fail.
the EGR ports in the TB must be all clear, so the porting of vacuum works right.
this ported vacuum reaches the MOD
I dont like this movement over 2500, that can no be right, hot engine, and off idle
we have the curve here. (note it is load controlled and not rpm) so testing is super hard, to get this.
the VSV works or the valve EGR main will be dead.
vacuum lines routed wrong,
make sure the vents on the mod top are clean and the vent port is not packed in crap or the mod valve will be dead or weak.
the silly spin tires rule on this car may apply,
out of suzuki book and tracker,geo (may not be true on canada ecu or some very early 92 ECUs) (but if EGR moves parked, wheels on ground, this is not true below..
http://www.fixkick.com/sensors/EGR/90-95/cal-egr-51.JPG
http://www.fixkick.com