i have a tbi 1989 camaro... it cam back as a gross polluter. any help of how to check or what to do please. HERE ARE THE #
HC max= 110 HC GP=285 actual HC @15mph = 295
CO max= .71 CO GP=2.21 actual CO @15mph =.01
NO max= 772 NO GP=1965 actual NO @15mph =1243

HC max= 85 HC GP=235 actual HC @25mph =175
CO max= .59 CO GP=2.09 actual CO @25mph =.01
NO max= 711 NO GP=1765 actual NO @25mph =1136

any help please, thanks

 

im leaning towards your cat

 

it has a brand new cat, just did a full tune up on car before smog, and new map.... anything else that could cause it

 

check for vacuum leaks, your timing, and compression

 

compression and timing is good... all i got left is vacum leaks.. thanks for the help... any advice on how to, or specs??? thanks

 

just get a vacuum diagram and some new line and follow them and replace them all make sure they are all in the right places

 

oh yeah also get a can of carb cleaner and spray along the intake manifold where it mounts to the heads and here the tb mounts to the exhaust and listen for a change in the rpms and if so tighten down or preferably gaskets

 

ok, thanks for the help, i really apreciate it a lot.. thanks

 

not a problem

 

there is a vacuum diagram on ur hood. its a sticker showin all vacuum and emission routing