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Old 03-29-2000, 09:37 PM
jeffsr jeffsr is offline
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Join Date: Jan 2000
Location: New Bedford, MA USA
Posts: 1,583
Burning a lot of oil will cause premature failure of the catalyst. Since you say that the head was redone at 90k, I'll bet you were burning oil..If the engine runs at all, even if it's running rich, you'd have to have gasoline pouring out the tailpipe to kill the cat. My bet is too much oil passed thru the cat bed...

Jeff L
1987 300e
1989 300e
1987 BMW 325
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