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Discussion Starter · #1 · (Edited)
Hi there. I am looking for a diagram on the emissions control for a 1990 toyota corona. it has had a engine replacement from the previous owners and now when it starts from cold, it runs too rich on the number 1 cylinder but when it warms up, it runs too lean on the same cylinder. all the other 3 are fine. If someone could help me out. i would be extremely grateful.
 
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