A machine shop here in the San Fernando Valley says that if the CO is too
low like .01-.05....something really low like that, you
run the  risk of too lean a fuel mixture, which could cause the pH of the
oil to become corrosive and hurt the
bearings.  He did not notice any thrown rods on the 2.1L, but he said if
there was a lean FI
that the engines suffered from bearing failure, cracked heads between the
seats...

So make sure your CO ( carbon monoxide) on your emissions is between  0.7
and 1.0..........

Malibu Tony    85' Westy   1.9L      finding out lots of stuff about the
motor and how to make it really last........anyone have any 1.9L bearings
or a complete 2.1L w/ all the hardware?