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Failed Emissions
- Thread starter MoboHaji
- Start date
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ltdsupercharged
New member
post all your readings for the idle and 2500 rpm test.
Carb or EFI?
Does this truck have a working:
air injection
egr
pcv
How old is the cat and O2 sensor? Details about the
mechanical condition of truck ( original engine 250,000
never been rebuilt, etc...)
Carb or EFI?
Does this truck have a working:
air injection
egr
pcv
How old is the cat and O2 sensor? Details about the
mechanical condition of truck ( original engine 250,000
never been rebuilt, etc...)
An exhaust leak before the o2 sensor will cause a rich mixture. Also when we use to have testing here I would have to turn the distributor back all the way and the mixture screw all the way in (or was it out?) just to pass. Don't forget to get the cat nice and hot. If all else fails buy some of that stuff you pour in you tank that will make you pass. I am glad they did away with testing here.