How to - Nutter Bypass - Page 6

**Mike Romain** · 04-03-2009, 06:35 AM

Quote:

Originally Posted by ET48

Well,
I got finished with the jeep around 9:00pm and just now are getting around the laptop. The bypass went well and smooth. Basically just two wires to run for me, and adjust the timing and carb. I took it for a short test drive and it made alot of difference between 2,000rpm and 4,000rpm!!! I was doing burnouts all over the place

I have yet to get the adjustment perfect on the carb but it seems to run really well. Everytime I floor it, it will cutout and pick right up. I am gonna run the jeep to work and pull the plugs to see how they look. My guess is that I am running a little rich right now. Thanks for the info and it really helped.

Cool for a fast 'dead spot' test, unplug the EGR valve and block it's line. Lots of them will stumble after the Nutter with the EGR still working. Mine is like that so I just plugged the EGR back in come emissions time.

ET48 · 04-03-2009, 11:15 AM

Quote:

Originally Posted by Mike Romain

Cool for a fast 'dead spot' test, unplug the EGR valve and block it's line. Lots of them will stumble after the Nutter with the EGR still working. Mine is like that so I just plugged the EGR back in come emissions time.

I made a EGR valve block off plate that bolts to the manifold to eliminate the EGR years ago. Do I need to take the EGR line from the intake manifold to the exhaust manifold off and plug it?

**Mike Romain** · 04-03-2009, 02:04 PM

Quote:

Originally Posted by ET48

I made a EGR valve block off plate that bolts to the manifold to eliminate the EGR years ago. Do I need to take the EGR line from the intake manifold to the exhaust manifold off and plug it?

No, the issue was with the vacuum bounce I think when the EGR activates.

Tompatt · 04-03-2009, 02:35 PM

dude. THANK YOU. i got a timing light and i never knew how to time... but it looks easy.. ill be trying it soon.

**Mike Romain** · 04-26-2009, 06:17 AM

Quote:

Originally Posted by jfite

Hey with the stepper motor off, how do you adjust the pins? I'm a noob! Thanks.

Here, John did a great write up on it in this thread:

http://www.jeepforum.com/forum/f8/nutter-bypass-trouble-622349-post7072384/#post7072384

greenmanalishi · 05-05-2009, 08:20 AM

do you think i can find a mechanic or somebody to do this for me?

**Mike Romain** · 05-05-2009, 08:39 AM

Quote:

Originally Posted by greenmanalishi

do you think i can find a mechanic or somebody to do this for me?

Not likely. It is technically illegal to remove emissions equipment, no matter it can still pass the emissions sniffer and gets better mileage...

Surf2679 · 05-05-2009, 08:30 PM

Do I need to discconect vaccum advance from distributor before setting timing or is timing set without any disconnections..
Thanks

Tompatt · 05-05-2009, 08:34 PM

Quote:

Originally Posted by Surf2679

Do I need to discconect vaccum advance from distributor before setting timing or is timing set without any disconnections..
Thanks

im pretty sure its disconnect the vaccum line going to the dist and plug it.. then time.

**Mike Romain** · 05-06-2009, 05:54 AM

Quote:

Originally Posted by Surf2679

Do I need to discconect vaccum advance from distributor before setting timing or is timing set without any disconnections..
Thanks

You disconnect it and block it and you also need to change it's source to ported or over to the nipple on the valve cover side of the BBD.

Surf2679 · 05-06-2009, 07:57 AM

[QUOTE]You disconnect it and block it and you also need to change it's source to ported or over to the nipple on the valve cover side of the BBD.
__________________/QUOTE]

What do you mean by ported? and it is already connected to the valve cover side of the BBD from the factory. Plse explain.

Thanks

**Mike Romain** · 05-06-2009, 12:33 PM

[QUOTE=Surf2679;7148539]

Quote:

You disconnect it and block it and you also need to change it's source to ported or over to the nipple on the valve cover side of the BBD.
__________________/QUOTE]

What do you mean by ported? and it is already connected to the valve cover side of the BBD from the factory. Plse explain.

Thanks

Stock, the vacuum to the distributor come from a diverter valve that mixes manifold vacuum and ported vacuum via a CTO valve according to how hot the engine is.

Or it came from the drivers side above the brake feed for pure manifold vacuum depending on the flavor of the emissions.

I have never heard of a stock feedback 258 having pure ported vacuum, but I haven't seen them all....

Surf2679 · 05-06-2009, 01:22 PM

[QUOTE=Mike Romain;7149983]

Quote:

Originally Posted by Surf2679

Stock, the vacuum to the distributor come from a diverter valve that mixes manifold vacuum and ported vacuum via a CTO valve according to how hot the engine is.

Or it came from the drivers side above the brake feed for pure manifold vacuum depending on the flavor of the emissions.

I have never heard of a stock feedback 258 having pure ported vacuum, but I haven't seen them all....

I should not have termed it factory, now that I think of it I replaced the carb after I bought the Jeep and put hoses exactly as they were and the person before me already had it set up this way.

Thanks again

**Mr-Rock** · 05-07-2009, 12:03 AM

Just wanted to say thank you to all for constantly updating this thread! All my questions were answered in this or the "nutter bypass trouble" thread.
I just finished the bypass and went for a quick test drive. I can't believe that all the pinging is gone, and she rev's smoothly. I think I still need to fine tune the carb but I am impressed with the early results.

Thanks again!

**Mr-Rock** · 05-07-2009, 12:05 AM

Guess I have to change my signature from "soon to be nuttered" to just "NUTTERED"!