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#1
03-28-2000, 10:19 PM
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1986 280GE, 115k, head rebuilt at 90k.
What would cause the Cat substrate to clog and then fail? Basicly I've had a plugged cat for sometime. Gee, now I know why the engine was losing power and trying to overheat. Trying to isolate the fault. My thoughts so far are rich running. SOurces: leaking cold start injector, idle set too rich, others...? What if the EGR valve has failed to the closed position? Would this lack of fresh air prevent a clean burn by the time the mix gets to the cat? What else? ------------------ S, J.R. Brown 1986 280GE LWB Anthracite 1980 450SEL Champange 1981 Volvo 240DL UPS Brown 
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