where is the egr valve 89 260E

[STEPHEN]

Is it possable that my 89 280E 124 engine KMB 2.6 KMB 2.6 V6FA12 inline 6
doze not have an egr valve? I have looked all around the entire engine,
exhaust manifolds,back of head,intake area under the intake, all around the head. the exhaust manifolds have no egr ports nor is any plumbing that
would indcate it ever had one. as I dont have an engine manual yet.Im trying my best to get it to pass Calif.manual mode five gas data idel & fast idle smog test .
new
spark plugs non resistor type and new wires,02 sensor,cleaned rotor and cap,
test RPM=705
HC=326 PPM MAX 120 PPM FAILED
NO=54 PPM
CO=0.09%
CO2= 6.8%
02=10.7%


test RPM=2562
HC=255 PPM MAX 140 PPM FAILED
NO=153 PPM
CO=3.53 PPM MAX1.0% FAILED
CO2=9.4%
02=5.4%
From what I have been reading in the posts I might have bad Cats
or outher problem. Thanks STEPHEN