Fj60 smog review. Pls help! (1 Viewer)

Joined
Mar 3, 2016
Messages
48
Location
Walnut creek ca
hey everyone, I live in central ca, my 1985 fj60 just failed smog. I currently have a fully rebuilt carb off of an 85 fj60 ready to be put on but just thought I'd run my test results through some experts like yourselves! Any advice or help is much appreciated thank you!

image.jpeg
 

Dynosoar

Slightly Disturbed
SILVER Star
Joined
Feb 3, 2006
Messages
4,054
Location
SoCal
Start with your AI (Air Injection system. Your risidual O2 is very low. Review youe emissions manual and follow all of the test procedures for that system. Your ABV will most likely need to be cleaned out and the vsv's may need to be replaced. Then go on to the EGR and troubleshoot that system. Be sure you have a clean air filter and PCV valve is hooked up and working.

Dyno
 
Joined
Mar 31, 2014
Messages
4,468
Location
Gone
High HC & CO & low O2 (& lowish CO2) are often symptoms of a weak or malfunctioning Air Injection System when they are all present together.

Since your NO numbers are good, that's saying that the EGR is working & the catalytic converter (may) be working OK enough.

When the air injection system is working as it should, the extra air (oxygen) pumped into the exhaust helps the catalytic converter convert CO to CO2.

High HC can be caused by these things.

(I'm too lazy too type it out)
 
Last edited:

Users who are viewing this thread

Top Bottom