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97 voyager - catalytic efficiency failure



 
 
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  #14  
Old July 19th 05, 10:53 AM
Ted Mittelstaedt
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"Matt Whiting" > wrote in message
...
>
> True, but you can't economically produce gasoline that is 100% free of
> contamination. Eve trace levels add up over time. That was my point.
> You seemed to be implying that unless something goes amiss with the
> engine, a catcon will last indefinitely. That simply isn't true.
>


I was making a statement based on what I assumed the mileage was, and
yes I implied that the OP's catcon shouldn't have failed. But that was
based on an assumed mileage which I felt reasonable. Unfortunately that
is the danger of reasonable assumptions, they are often wrong. Sigh.

In reality the OP's putting 25k miles a year on this van - quite a different
issue.

>
> >>>catcons fail because the fuel mixture going into them is wrong. Too

> >
> > rich
> >
> >>>and they get sooted
> >>>up. Too lean and they overheat and burn up. Without finding the

reason
> >>>that this
> >>>catcon failed, a new one will be destroyed in short order.

>
>
> They fail for other reasons also, that was my point.
>


Well, I don't really consider an age-triggered failure to be an unexpected
maintainence expense. Anything that doesen't die prematurely due to
defect or other outside influence is going to naturally fail at the end of
it's
service life. You can hardly expect otherwise.

Ted


 




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