FW: Too lean,too hot

["Anne O'Driscoll" <marinefuel@domain.elided>]

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>From: "Anne O'Driscoll" <marinefuel@domain.elided>
>To: alfa-digest@digest net
>Subject: Too lean,too hot
>Date: Mon, Jan 17, 2000, 2:06 PM
>

>My latest Alfa is an 84 Spyder,bought with a toasted engine.Remarkably,the
>head gasket was intact but one piston had a hole and all had cracked top
>rings.
>
>After rebuilding the engine,replacing all vacuum hoses,fuel
>filter,thermostat and flushing radiator the car still runs too hot and too
>lean.
>
>The auxiliary air device is working,to maintain 1000 rpm (lumpy)idle the
>airflow meter has to be set to maximum richness. The idle adjustment is set
>to 1500 RPM warm,the only way to maintain a cold idle.  
>
>The timing is correct, cold start valve is good,the o ring on the air flow
>meter adjuster is good, the temp senders are new, no vacuum leaks.
>
>The car runs at a normal temperature on an open road buts hot in traffic or
>idling. It is a non-fuctional air conditioned model. Is it a disease of A/C
>Spyders? Is it improved by removing the condensor?
>
>The only part out of the ordinary is a three wire (with only one connected)
>O sensor instead of the one wire sensor the car should have. Are the
>resistance values different between the two sensors? Can this be a source of
>the mixture problem?
>
>Any suggestions would be appreciated.
>
>
>---
>Anne  <marinefuel@domain.elided>
>
>
>
>
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