Another failed smog thread
#1
Registered User
Thread Starter
Join Date: May 2006
Location: Roseville, CA
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
Another failed smog thread
Well I took 87 4runner in to be smogged and it failed badly. Here are the numbers
15mph
%CO2 15.1
%O2 .1
HC MAX 131
HC MEAS 37
CO% MAX .87
CO% MEAS .02
NO MAX 1085
NO MEAS 1260
25mph
%CO2 15.0
%O2 .2
HC MAX 103
HC MEAS 27
CO% MAX 1.10
CO% MEAS .02
NO MAX 1120
NO MEAS 2350
The smog tech thinks it may be the EGR valve. I have replaced both the cat and O2 sensor less than a year ago. When I got home I checked the vacuum hose on my EGR valve and it was very loose. When I get home from work tonight I am going to replace all my vacuum lines, take off the EGR valve and make sure its clean. I may also run a can of seafoam through my truck. Does that seem like a good plan or is there anything else I should check? I really don't want to waste my free retest. Thanks for any help you guys can give.
15mph
%CO2 15.1
%O2 .1
HC MAX 131
HC MEAS 37
CO% MAX .87
CO% MEAS .02
NO MAX 1085
NO MEAS 1260
25mph
%CO2 15.0
%O2 .2
HC MAX 103
HC MEAS 27
CO% MAX 1.10
CO% MEAS .02
NO MAX 1120
NO MEAS 2350
The smog tech thinks it may be the EGR valve. I have replaced both the cat and O2 sensor less than a year ago. When I got home I checked the vacuum hose on my EGR valve and it was very loose. When I get home from work tonight I am going to replace all my vacuum lines, take off the EGR valve and make sure its clean. I may also run a can of seafoam through my truck. Does that seem like a good plan or is there anything else I should check? I really don't want to waste my free retest. Thanks for any help you guys can give.
#3
Registered User
Thread Starter
Join Date: May 2006
Location: Roseville, CA
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
I removed the EGR valve (what a pain in the ass) and cleaned it. I also replaced a bunch of vacuum hoses and ran some seafoam through the moter. Then this morning I took it back for its free retest and it failed the first time. Then the tech ran it a second time and it barly passed. Sometimes I just hate my 4runner but when I am in the mud it puts a smile on my face.
Thread
Thread Starter
Forum
Replies
Last Post