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Unread 04-14-2013, 07:33 PM   #1
bdsmitch
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1983 CJ7 
 
Join Date: Feb 2012
Posts: 39
nutter bypass

would that be worth doing if it is has holly fuel injection, it still runs off of points so i would imagine it would but not sure. It passed emissions great changed some title things around and had to do it again 4 months later and failed did a tune up got closer but still failed

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Unread 04-14-2013, 07:57 PM   #2
Jon In Tucson
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1983 CJ5 
 
Join Date: Aug 2008
Location: Tucson, AZ
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Quote:
Originally Posted by bdsmitch View Post
would that be worth doing if it is has holly fuel injection, it still runs off of points so i would imagine it would but not sure. It passed emissions great changed some title things around and had to do it again 4 months later and failed did a tune up got closer but still failed
Depends... What did you change from the time it passed emissions to the present failure. Nutter bypass is to take the CEC emissions computer out of the control of the timing and the stepper motor pins on the Carter BBD carburetor. If you have Holley fuel injection, no carburetor to mess with, plus an 1983 "should" have a Duraspark pointless distributor using the Ford type ignition module found under the washer bottle on the driver's side inner fender.
So what do you have there pardner? God bless.
Jon In Tucson
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Unread 04-14-2013, 08:05 PM   #3
bdsmitch
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1983 CJ7 
 
Join Date: Feb 2012
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still on points i have that dura spark that i upgraded to the ford cap . I replaced that module once maybe it went bad again . i didnt really change anything between then i did everything before the first emmisions now i have a slight mis and wont pass
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Unread 04-14-2013, 08:55 PM   #4
Jon In Tucson
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1983 CJ5 
 
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Quote:
Originally Posted by bdsmitch View Post
still on points i have that dura spark that i upgraded to the ford cap . I replaced that module once maybe it went bad again . i didnt really change anything between then i did everything before the first emmisions now i have a slight mis and wont pass
First things first? What are you failing emissions on? HC, CO, or NOX if your state tests for it. Cruise or idle failure?
Sounds like you have an ignition misfire and that is causing unburned gas to enter the exhaust stream.
Most big box parts stores can test the ignition module and let you know if it is failing. Anyway let's find out what the emission failure is before throwing parts at the problem. God bless.
Jon In Tucson
__________________
Jeremiah 17:7 "But blessed is the man who trusts in the Lord, whose confidence in Him."

"The secret to a Jeep, especially a CJ, is you can't
panic." - Mike

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Unread 04-14-2013, 09:25 PM   #5
bdsmitch
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1983 CJ7 
 
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yeah so before the tune up on idle co was at 3.69 and required to be at 1.20 and hc was at 282 and required to be at 220 and on the high speed co was 1.33 and hc was 96. so i out of 4 passed


after tune up idle co was at 2.13 and hc was at 192 and high speed co was at 1.76 and hc was at 103 so 2 out of 4 passed
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