How to - Nutter Bypass - Page 10 - JeepForum.com
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post #136 of 434 Old 12-07-2009, 05:25 PM
jkwap91
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1998 TJ Wrangler 
 
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alright so I did this and it worked great but the next day I went to go start it up it wont fire. Im getting a spark and fuel to the carb what could it be?


-2001 Jeep Grand Cherokee 4.7L 2 inches of lift
-1998 Jeep Wrangler 4.0
4 inches of lift
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post #137 of 434 Old 12-08-2009, 05:36 AM
Mike Romain
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Gas filter in upside down?

Did you get the timing to 8 BTDC at idle with the vacuum line off and plugged?

Did you get the idle mix set?

Mike
86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
Some Canadian Bush Jeep Runs and Build Photos: http://mikeromainjeeptrips.shutterfly.com (10 new albums added Sept 16/10)
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post #138 of 434 Old 12-08-2009, 06:02 AM
Mr-Rock
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Quote:
Originally Posted by MoC View Post
Once the engine is nuttered and the computer is disconnected / removed it does nothing. When the computer is installed it feeds information to the computer. Once you remove the old wiring harrness you will find the wires from it leading to the plug at the computer. Here is a good link if you do not already have it. What Controls What
If you are already nuttered you should look in to removing the old wiring from the computer. I pulled mine about a month ago and was really amazed at the amount of wire I was able to remove. When I did it I also repalced the old black plastic wire conduit with some new conduit from auto zone. Be carefull when you start pulling the wire your reverse lights are mixed in with some of the old computer wiring. I cut my harness were it comes through the firewall at the computer, removed all the black wire conduit and tape and pulled each wire out one at a time. Took less that a hour, including reinstalling the conduit and looks nice.
Great thanks, Mine has a cut wire and I just wanted to make sure it wasn't harming anything.
One of these day I'll get in there and start removing the excess wires!

'89, 4.2, NUTTERED, Team Rush, 4" lift, 1"BL, 1"MML, Flat belly skid, SYE, CV Driveshaft,
35 x 12.50s, XRC8, 150w KC's, Herculined, Tauras Elec Fan, Dual Batteries, 1" shackles & Soft Top for the summer, TJ flares.
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post #139 of 434 Old 12-17-2009, 08:25 PM
BigOrange90YJ
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Question: I need to pass emissions one more time before I move to a county that doesnt do emissions. Right now I cannot pass do to exhaust leak and not having an enclosed airfilter. Should I wait until I get it to pass emissions or would it more then likely make it run cleaner?


Specs: 258 w/ Weber 32/36 I have pretty much removed everything emissions already though. Pretty much all that is left is the charcoal canister and pcv system recirculating I hope I won't have to find somebody to buy a sticker from.
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post #140 of 434 Old 12-17-2009, 09:36 PM
mcmud
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Once it is only the air filter that would restrict you from passing the emission check you can get an adapter to accommodate the OEM air filter housing. I of course haven't a clue where you purchased your DGEV from but realize it was was very recently. I'm sure they will will sell you that adapter.
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post #141 of 434 Old 12-17-2009, 09:51 PM
BigOrange90YJ
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Quote:
Originally Posted by mcmud View Post
Once it is only the air filter that would restrict you from passing the emission check you can get an adapter to accommodate the OEM air filter housing. I of course haven't a clue where you purchased your DGEV from but realize it was was very recently. I'm sure they will will sell you that adapter.
so go ahead with the Nutter? I bought it right from redline.
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post #142 of 434 Old 12-17-2009, 10:14 PM
mcmud
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Defiantly. Often thought I read of emission test failures because of the non oem type carb and because of ripping out the vacuum switches, tubes and such. If this is not the case in your area and you loom the wires, no one will notice the nutter. It is a very good thing.
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post #143 of 434 Old 12-17-2009, 10:17 PM
BigOrange90YJ
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Ok awesome! You have been alot of help this week, thanks a ton. I'm going to nock out the nutter this weekend
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post #144 of 434 Old 12-17-2009, 10:42 PM
mcmud
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Your very welcome. Read this thread and all will be well, if the law will allow.
Roll Tide!
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post #145 of 434 Old 12-17-2009, 10:47 PM
BigOrange90YJ
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Well all I have to pass is the snuff test so hopefully I can tune it to pass.
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post #146 of 434 Old 12-24-2009, 06:50 AM
Mike Romain
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Quote:
Originally Posted by BigOrange90YJ View Post
Well all I have to pass is the snuff test so hopefully I can tune it to pass.
When I do the 'best lean' idle mix, I leave it at the rumble point, rather than back it off perfectly smooth. So when it gets to the rumble point, I only come back 1/8 of a turn on each screw instead of the 1/4 turn called for. The sniffer seems to like it there.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
Some Canadian Bush Jeep Runs and Build Photos: http://mikeromainjeeptrips.shutterfly.com (10 new albums added Sept 16/10)
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post #147 of 434 Old 02-24-2010, 03:25 PM
dblount
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Great post! Thanks

Last edited by dblount; 02-24-2010 at 03:57 PM.
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post #148 of 434 Old 03-09-2010, 12:16 PM
Drsafety
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Quote:
Originally Posted by Fjguercio View Post
The NUTTER BYPASS IS FOR JEEPS 1982 AND NEWER WITH THE BBD CARTER CARB. IT MAKES THE BBD CARB ACT LIKE THE 1970'S AND early 1980'S CARB THAT DID NOT LOOK AT THE ENGINE OPERATION TO ADJUST THE CARB SETTINGS


This is a nice write up on the Nutter ByPass!!

If the JEEP OWNER goes thru this, Nutter, upgrade or change I would also recommend upgrading the cap, rotar, coil, and plug wires. I noticed you pics used the OEM Jeep grey distributor cap. This change gave me 2.5 mpg inprovement with out changing a single thing. This is often refered to as TeamRush Upgrade. I STRONGLY RECOMMEND BOTH, NUTTER & TEAMRUSH.

TeamRush by JeepHammer
GM HEI vs. Motorcraft/DuraSpark Ignitions

Regards,
Fred
I have an 1981 Kalifornia Jeep...I am sure it has the computer...Why does this thread state "82 or newer?" I plan on doing the Nutter bypass this weekend...Is there any reason the 81 Kalifornia jeep setup will cause issues?

O||||O 1981 Jeep CJ7 258 (4.2L), T-18, Dana 300, Dana 20 rear, Dana 30 front, Carter BBD w/stepper, Team Rushed / Nutter Bypass
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post #149 of 434 Old 03-09-2010, 12:36 PM
Mike Romain
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Quote:
Originally Posted by Drsafety View Post
I have an 1981 Kalifornia Jeep...I am sure it has the computer...Why does this thread state "82 or newer?" I plan on doing the Nutter bypass this weekend...Is there any reason the 81 Kalifornia jeep setup will cause issues?
In most places, the full Ford emissions computer that sat on top of the heater behind the glove box came in for the 83 year I think with a bunch in 82. The earlier ones like your 81 usually only had the O2 sensor and a carb feedback circuit on them, it didn't mess with the timing like the later ones I think it is.

So when you go look at yours, you may find the purple wire at the ignition module may go beyond the first plug. The full computer ones don't so you have to add the purple wire.

I would still be wanting to trace the wires from the ignition module to the distributor to be sure they don't tag that box on the passenger fender.

Then you would be wanting to set the feedback carb with the pins the same as the later ones like described here. If you have to remove the stepper motor to get it's pins moving, here is how it should set up to have the pins right:


Mike
86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
Some Canadian Bush Jeep Runs and Build Photos: http://mikeromainjeeptrips.shutterfly.com (10 new albums added Sept 16/10)
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post #150 of 434 Old 03-09-2010, 01:56 PM
Fjguercio
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Quote:
Originally Posted by Drsafety View Post
I have an 1981 Kalifornia Jeep...I am sure it has the computer...Why does this thread state "82 or newer?" I plan on doing the Nutter bypass this weekend...Is there any reason the 81 Kalifornia jeep setup will cause issues?
Calf was an exception... Calf changed in 1981 to the computer and emissions for all the AMC products. The rest of USA did not change till 1982.

Emissions Versions will have the computer control and carb with feedback pins.

Calf also has strict laws on what you can change too. Sorry... the Calf guys are usually up on this 1981/1982 change date.
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