spdwaver
Formerly Kalifornistanian
Key words: 3f-e desmog 1991 desmog 1992 desmog bypass smog pump bypass belt part number desmog using bb's bb's in vacuum lines
I followed JollyGreen's thread de-smog procedure in placing BB's in the vacuum lines, and re-routing of the two lines closest to the cab. As far as I can tell, I followed JollyGreen's method without deviating.
In this thread, I am going to go in a little more detail through illustrations for those who need every visual detail. The following text was taken from JollyGreen's thread, for reference.
"I just put BB's into the vac lines on all the EGR stuff and put the air pump bypass belt on it to test an idle problem I was having and my 80 idles 10 times better now. I obviously have a vacuum leak somewhere. I will find it and plan on putting the smog stuff back.
The unexpected side effect was I went from 10.8 MPG on my first 2 tanks to 15.3 MPG verified on 2 tanks just from doing this alone!
I didn't notice much of a power change but there is a huge increase in torque.
All of the egr vacuum lines over on the drivers side of the motor, I put BB's in the line to block it off and put a shorter belt than normally goes to the smog pump so it bypassed the smog pump "by not having a belt on it. Gates TR22525 replacement belt."
First and second image:
Blue lines - These lines represent those packed with a BB on one end.
Green lines - These lines represent re-routing (looped).
Third image:
BB is placed into the line (blue). Also note the detail on the vacuum line retaining clips, showing which lines are blocked and which are re-routed (looped).
I followed JollyGreen's thread de-smog procedure in placing BB's in the vacuum lines, and re-routing of the two lines closest to the cab. As far as I can tell, I followed JollyGreen's method without deviating.
In this thread, I am going to go in a little more detail through illustrations for those who need every visual detail. The following text was taken from JollyGreen's thread, for reference.
"I just put BB's into the vac lines on all the EGR stuff and put the air pump bypass belt on it to test an idle problem I was having and my 80 idles 10 times better now. I obviously have a vacuum leak somewhere. I will find it and plan on putting the smog stuff back.
The unexpected side effect was I went from 10.8 MPG on my first 2 tanks to 15.3 MPG verified on 2 tanks just from doing this alone!
I didn't notice much of a power change but there is a huge increase in torque.
All of the egr vacuum lines over on the drivers side of the motor, I put BB's in the line to block it off and put a shorter belt than normally goes to the smog pump so it bypassed the smog pump "by not having a belt on it. Gates TR22525 replacement belt."
First and second image:
Blue lines - These lines represent those packed with a BB on one end.
Green lines - These lines represent re-routing (looped).
Third image:
BB is placed into the line (blue). Also note the detail on the vacuum line retaining clips, showing which lines are blocked and which are re-routed (looped).
Last edited: