[DML] Re: Does Lack Of Smog Pump/ EGR Cause Long Term Damage To DeLo Converter?

["content22207" <brobertson@xxxxxxxxxxxx>]

DeLo is the only catalytic converter equipped car (circa 1980) I've
encountered without a smog pump, thus my question -- especially
considering Volvo was using one on the exact same engine.

Our little silver cars *DO* have design flaws (TAB's, cooling fan and
door lock circuitry, lower control arms, etc), so a flaw in the
exhaust system isn't unimaginable.

And most DeLo's have abnormally low mileage, so some design flaws are
only now becoming apparent.

I lost my converter, but I am also running an E series engine which
may have been too rich for the design.

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, "Dave Swingle" <swingle@xxxx> wrote:
> Based on the fact that many properly operating and tuned DeLoreans 
> are wearing their original Cats well over the 100K mile design 
> target, I'd say the design was sound. That's probably longer than 
> most of those smog pumps last, at least on the cars I've seen and 
> owned.
> 
> Don't mistake lack of maintenance and age-related deterioration for a 
> design flaw. We're driving these cars 12+ years after they were 
> supposed to be dead. Sometimes we forget about that.
> 
> Dave S
> 
> 
> -- In dmcnews@xxxxxxxxxxxxxxx, "content22207" <brobertson@xxxx> wrote:
> > David Teitelbaum and I are basically saying the same thing -- excess
> > unburned fuel damages a catalytic converter (what does removing a 
> smog
> > pump do -- eliminates continued burn in the exhaust stream, leaving
> > excess unburned fuel. I compound the problem by eliminating EGR 
> too).
> > 
> > The question is: does lack of a DeLo smog pump (and EGR -- that's 
> what
> > the blocked off ports in the U pipes are for) by design cause long
> > term damage to its converter?
> 
> > #5939




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