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Unread 10-16-2013, 11:20 PM   #1
Gante
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Join Date: Mar 2013
Location: Whittier, CA
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Removing vacumm and emission system?

I am completely frustrated with all the little issues that I may still need to fix on my 1991 Grand Wagoneer. A lot of the little issues seem to be related to the vacuum and emission system. I was wondering if any members have decided to remove these systems from their truck for simplicity. I live in California therefore the smog check may be an issue.
All the hoses and emission lines make these engines very difficult to troubleshoot.

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Unread 10-17-2013, 06:37 AM   #2
muddy93
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1987 FSJ Wagoneer 
 
Join Date: Aug 2007
Location: Templeton, Indiana
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I removed almost all that stuff from mine, but I'm not it CA. If I'm not mistaken, you have to have ALL that stuff to pass the visual part of your inspections.

A little note though, you can NOT just remove all that stuff and expect it to run correctly. It was all originally designed to work together. Once the emissions stuff is removed, you basically have to re-tune the engine (carb, vac advance, timing, etc.....) to get it to run good.

On my 87, I removed everything except the vapor canister, and spent a full weekend tuning to get it running how I wanted it to.
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Unread 10-18-2013, 09:07 AM   #3
super98lsc
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1999 WJ 
 
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x2 on what Muddy93 said. And in CA it will NOT pass visual even if the exhaust is actually burning cleaner
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Unread 10-18-2013, 02:10 PM   #4
Gante
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True, I forgot that it has to pass a visual inspection even if it meets all other exhaust criteria
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Unread 10-18-2013, 02:41 PM   #5
Gante
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Quote:
Originally Posted by super98lsc
x2 on what Muddy93 said. And in CA it will NOT pass visual even if the exhaust is actually burning cleaner
Sometimes I wonder why I still live in California!
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Unread 10-22-2013, 12:24 AM   #6
carnuck
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1984 J-Series Truck 
 
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I took my stuff out and noted where it all went, then modded things my way and stuck the junk back in for looks. No more E-test for me in Seattle.
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Unread 10-23-2013, 04:45 AM   #7
Renodemona
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1976 FSJ Cherokee 
 
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Location: Reno, NV
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Something that I had to do to not almost drain the battery to start was work the timing a little and advance it. It is easier to start now, but not "easy." Of course old rotten gas and a dirty dirty carb probably don't help. Keep at it. I found it extremely relaxing to replace vacuum and fuel hoses, plus now I know they are all good and new. I don't know a lot about CA DMV, but I think you can get an emissions waiver if you drive under a few thousand miles a year and the vehicle is 'restored.' But that might be not the case, I don't remember. NV emissions are way different, and mine was old enough to qualify for a waiver anyway. Good luck!
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Unread 10-25-2013, 06:55 AM   #8
Gante
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Quote:
Originally Posted by Renodemona
Something that I had to do to not almost drain the battery to start was work the timing a little and advance it. It is easier to start now, but not "easy." Of course old rotten gas and a dirty dirty carb probably don't help. Keep at it. I found it extremely relaxing to replace vacuum and fuel hoses, plus now I know they are all good and new. I don't know a lot about CA DMV, but I think you can get an emissions waiver if you drive under a few thousand miles a year and the vehicle is 'restored.' But that might be not the case, I don't remember. NV emissions are way different, and mine was old enough to qualify for a waiver anyway. Good luck!
Thank you, yes someone had advice to look into the timing which I still have to do. As for the carb, it is freshly rebuilt therefore I would not expect it to be very dirty. I will look into starting to replace some lines.
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