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1987 Chevrolet Caprice 5.0L Excessive Emissions
Posted to GM Driveability on 8/20/2001 6 Replies

Hello Techs,

This 305 4bbl Caprice failed emissions for nox. EGR valve was frozen. We removed the old valve and started the engine to verify the exhaust and intake ports were open. The exhaust port seems fine. However the intake port appears clogged. When you...

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  Related Documents & Media  1987 Chevrolet Caprice

 
Message Closed w/FIX

car Vehicle Data

1987 Chevrolet Caprice

VIN IGIBU5IH6H
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryCARB / 4BBL
EmissionsFEDERAL
SymptomsExcessive Emissions
OccursAlways
Message Closed w/FIX

car Vehicle Data

1987 Chevrolet Caprice

VIN IGIBU5IH6H
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryCARB / 4BBL
EmissionsFEDERAL
SymptomsExcessive Emissions
OccursAlways