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04-06-2006, 02:15 AM
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#1 |
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Registered User
Join Date: Jan 2004
Location: Paso Robles, CA
Posts: 347
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Thermostatic Air Cleaner Help!!
I need to reinstall the thermostatic air cleaner to pass smog. It a 76 K15 with the 350. I have the original air cleaner back on but for the life of me cant figure out how the vaccuum hoses go. Can someone tell me how they are routed. This is the last time I have to do this. I need to know where on the quadrajet they hook up to.
Any Help would be super.
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Tony  "Life is a Team Sport" To the memory of the Hendrick Motorsports Plane Crash Victims Last edited by Paso76GMCstepper; 04-06-2006 at 02:15 AM. |
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04-06-2006, 08:35 AM
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#2 |
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Professional Beer Tester
Join Date: Aug 2004
Location: Louisiana
Posts: 453
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Re: Thermostatic Air Cleaner Help!!
All the ones I've seen have it hooked to the vacuum port that sticks strait out the right(passenger) side of the carb, near the choke linkage. Hope that helps.
60-66 Nut
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60 Ford F100 Custom Cab 61 Apache Short Fleetside 64 C10 Short Stepside 65 C80 409 V8 5spd(X-Firetruck) 83 GMC 350 Olds Diesel 85 GMC Short Bed 86 GMC Short Bed 90 GMC R3500 Crew Cab 92 GMC 1500 |
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04-06-2006, 09:38 PM
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#3 |
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Right on the line, baby!
Join Date: Oct 2003
Location: Phila, PA 19130
Posts: 1,486
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Re: Thermostatic Air Cleaner Help!!
I know this isn't from a 76, it's a 77. You can look at AutoZone.com
I hope this helps.
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83 GMC 406 th400/3.73 Eaton Truetrac posi, headers, x pipe, & racePros. Tubular control arms, lowering rear springs, caltracs. Still ugly, but getting built right, although slowly Click and scroll down for site vendors! Subscribe here! |
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04-06-2006, 11:11 PM
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#4 |
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Registered User
Join Date: Jan 2006
Location: chicago
Posts: 62
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Re: Thermostatic Air Cleaner Help!!
Are you hooking it all back up because you are trying to pass emmisions?
I have an 80 that would not pass and It was a fresh rebuild  I didn't like the look of all that crap anyways. So I got antique plates on it No more emmisions!
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04-07-2006, 03:04 AM
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#5 |
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Registered User
Join Date: Jan 2004
Location: Paso Robles, CA
Posts: 347
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Re: Thermostatic Air Cleaner Help!!
Yes Im doing it to pass smog. It is a Federal Smog so all it needs is its PCV and a working Thermostatic air cleaner. I have 3 vaccuum ports on the air cleaner. Thanks for all the help but I dont have EGR's or canisters.
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Tony "Life is a Team Sport" To the memory of the Hendrick Motorsports Plane Crash Victims |
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04-07-2006, 09:44 AM
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#6 |
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Professional Beer Tester
Join Date: Aug 2004
Location: Louisiana
Posts: 453
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Re: Thermostatic Air Cleaner Help!!
Tony, on my 78 3/4 ton (which should be similar to your 76) there is only 2 hoses on the air cleaner. One goes from the right side port on the carb to the thermostatic valve in the air cleaner, then the other goes from the valve to the diaphram that controls the flap.
60-66 Nut
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60 Ford F100 Custom Cab 61 Apache Short Fleetside 64 C10 Short Stepside 65 C80 409 V8 5spd(X-Firetruck) 83 GMC 350 Olds Diesel 85 GMC Short Bed 86 GMC Short Bed 90 GMC R3500 Crew Cab 92 GMC 1500 |
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04-22-2006, 07:03 PM
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#7 |
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Registered User
Join Date: Nov 2005
Location: WV
Posts: 227
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Re: Thermostatic Air Cleaner Help!!
Have you tried leaning out your carb for emissions testing then putting it back to normal after you get it inspected?
Shane
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1993 K1500 350 5 speed  1985 K10 Silverado Vortec 406 5 speed (in body shop) "I been drivin' this '85 pickup truck Them buddies of mine call it a bucket of rust She's a little beat up but she still runs like the wind Yeah, kinda like me I been banged and bruisedBeen around the block a time or two But I'm runnin' like new goin' places I never been No, I ain't broke I'm just broken in" 1963 Dodge Townwagon(its amazng what 30 years and zero miles will do to a vehicle  )Member#20327 |
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04-23-2006, 01:31 AM
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#8 |
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Account Suspended
Join Date: Sep 2005
Location: Nor*Cal
Posts: 186
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Re: Thermostatic Air Cleaner Help!!
I have a 75 California truck, but if it's any help...
There should be a vacuum "tee" on the thermostat housing. One house goes to a vacuum port on the carb, the other goes to the air cleaner, the air cleaner goes out to the little butterfly valve down on the passenger side manifold. I'll see if I can't dig up a picture, or if you could post one, I could decipher it. |
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04-26-2006, 01:27 PM
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#9 |
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Registered User
Join Date: Jan 2004
Location: Paso Robles, CA
Posts: 347
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Re: Thermostatic Air Cleaner Help!!
WOW thanks everyone for all the help. I was all gung ho to go out there and do it but alas it is raining in "Sunny California" I wish.
Anyway with all the replies I know I can make it work. Thanks again.
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Tony "Life is a Team Sport" To the memory of the Hendrick Motorsports Plane Crash Victims |
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