lobstabuoy

I need some input in trying to isolate what might cause my 1993 90 CSQ to start blowing a noctious grey/white smoke from both exhausts ONCE heated up.
I put the VAG on it and found Fault code 00537, LAMBDA SENSOR Control Limit Surpassed as well as an intermittant leaking/Sticking #1 Fuel Injector.
I replaced the O2 sensor and double checked the Injector connection and the codes cleared yet once the engine comes up to Temperature, the smoking starts. The fumes smell like unburned hydrocarbons.

I feel that it is one of the temperature controlled Emission Components that may be malfunctioning or a bad vacuum line.
If there was raw fuel leaking into the Combustion Chamber, could I have caused perminent damage to the Cat? Is this symptomatic of a blown Cat?

Car runs a bit warm but relatively well otherwise.

Any suggestions are greatly appreciated~

Gomer

I am no mechanic but usually white/grey smoke is water/coolant. That may be the reason it is running a little hot. Bad head gasket would be my uneducated guess. Whats your coolant level ? Have mechanic pressurize the system. They can also ''smoke it'' and see where it comes out.Codes may be just a coincedence with the smoke.

Gomer

Raw fuel is usually black when it exits the exhaust. Oil is blue

lobstabuoy

Thanks for the feed back...Coolant level maintains its proper level. The fumes are Hydrocarbon as opposed to Glycol based and the engine idles and runs decent otherwise, unlike a blown head gasket.
Are there any other controls that effect the mixture settings once the engine is at temperature that I might check?