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1994 Pontiac Firebird 3.4L Emissions

117 Views 2 Replies 3 Participants Last post by  ZumpTA
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Im having trouble trying to pass emissions here in Colorado have changed multiple things and still having the same issue.
Things I’ve changed
-EGR Valve
-Evap canister
-Fuel pump
-Spark plug and wires
-Air filter
Anything else I should look out for I’ve hit a dead stop and can’t figure out where to go now
Would appreciate the help.
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