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03-04-2003, 10:23 AM
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#1 |
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Registered User
Join Date: Feb 2003
Location: Mont Belvieu, TX
Posts: 852
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'86 emissions rats nest
I have been browsing through some of the engine pics on here of the '86 and newer trucks, and I must be missing something.
I am not seeing the rats nest of vaccum hoses like I have on mine. How much of this junk can I do away with? I do not have emission testing where I live, but will they visually check for this? Most of the hoses seem to originate at the vapor canister, how will removing this effect my engine performance? I know this is probably a complicated issue, but I would really like to clean up my engine bay.
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Chris '92 ext. cab s/b 4.3L "Sparky" '04 crew cab 2500 4x4 6.0L |
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03-04-2003, 10:31 AM
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#2 | |
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Trucker.
Join Date: Nov 2002
Location: Fort Worth, TX
Posts: 1,364
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Re: '86 emissions rats nest
Quote:
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03-04-2003, 11:43 AM
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#3 |
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No Brakes Club
Join Date: Jan 2003
Location: Carthage, N.C.
Posts: 263
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CRRoy71,
Took most of that stuff off mine and with a little fine tuning it ran fine. 
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Ryan Flowers 85 GMC Suburban 4x4 379 90 GMC Suburban 4x4 383 01 Chevy Suburban 2x4 350 Click here to email me Click here to visit my web site |
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03-04-2003, 11:44 AM
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#4 |
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Insert Witty Text Here
Join Date: Oct 2002
Location: San Antonio, TX
Posts: 3,415
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I have an '86, and the emission stuff is a nightmare. Mine is all messed up. Some of the stuff is missing, and what is there appears to be hooked up wrong.
We are supposed to start emission testing here in San Antonio in the next 1 to 3 years, so I leave it all there.  Slonaker |
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03-04-2003, 12:40 PM
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#5 |
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Registered User
Join Date: Oct 2002
Location: Phoenix, Arizona
Posts: 4,703
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One thing I found out about these trucks is not how many vacuum lines they have, but how they are routed. I took all the lines off the canister and bundled them together with zip ties then ran them up by the coiled brake lines then over the valve cover and branched them out. This cleaned up the engine alot and makes it easier to track them down. The vacuum lines are longer then they need to be and that is one reason it looks like such a mess (atleast thats how it was on mine).
I would suggest posting pictures of your engine and letting us give you some ideas on what to remove and what to keep.
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03-04-2003, 01:15 PM
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#6 |
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Registered User
Join Date: Feb 2003
Location: Mont Belvieu, TX
Posts: 852
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I will try to get out there today or tomorrow and get some pics.
Thanks for the responses.
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Chris '92 ext. cab s/b 4.3L "Sparky" '04 crew cab 2500 4x4 6.0L |
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03-04-2003, 07:16 PM
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#7 |
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I'm back with 2nd truck!
Join Date: Feb 2002
Location: Texas
Posts: 3,774
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I also live in a sniff county and they were eay to pass that but the dyno is the tough part. I always go to the place I'll get tested and ask the guy to see if I need anything for visual to pass before I even get them to start paperwork.
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1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson |
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03-06-2003, 01:15 AM
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#8 |
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Registered User
Join Date: Feb 2003
Location: Mont Belvieu, TX
Posts: 852
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Rats nest pics
There must be a rat family in there
  What a mess! 
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Chris '92 ext. cab s/b 4.3L "Sparky" '04 crew cab 2500 4x4 6.0L |
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