B
Black Dog
(6 legacy outback, 2.5, 160,000 miles, code for catalytic efficency...
Fuel mileage doesn't seem too good, and am in process checking.
The EGR valve diaphram doesn't move, so I suspect it needs replacing, the
spark plugs have never been replaced as far as I know..., the tailpipe is
black sooty, and the oxygen sensors may need replacing although there is no
code. I was wondering if replacing the plugs, EGR, and oxygen sensors might
prevent me from having to purchase new cats...?...
Thanks
R.
Fuel mileage doesn't seem too good, and am in process checking.
The EGR valve diaphram doesn't move, so I suspect it needs replacing, the
spark plugs have never been replaced as far as I know..., the tailpipe is
black sooty, and the oxygen sensors may need replacing although there is no
code. I was wondering if replacing the plugs, EGR, and oxygen sensors might
prevent me from having to purchase new cats...?...
Thanks
R.