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04-08-2008, 07:39 AM
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#1 |
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Moderator
 
Join Date: Jul 2006
Location: Ozark, MO
Posts: 4,893
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TBI help
I found two open vacuum ports on my '87 305 TBI. Does anybody have a TBI vacuum diagram?
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'86 GMC C30 Crew ~ '86 C20 Crew ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '74K10 ~ '71 Cheyenne swb ~'50 3100 bagged ~ '80 Wife ~ Late model kids
Last edited by LEEVON; 04-08-2008 at 08:16 AM. |
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04-08-2008, 02:15 PM
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#2 |
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Dirteh Kitteh
Join Date: Nov 2006
Location: Mormon country
Posts: 2,484
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Re: TBI help
There should only be a couple. One for the EGR valve solenoid, one for the evaporative canister (on the rad support driver's front), and possibly one going to the temperature valve on the air cleaner. Unless you've got the vacuum controlled heater selector valves, in which case there will be one going there, too. Oh, and the one going to the MAP sensor.
I know yours is an 87, but should be similar to one of the ones on this page : http://www.autozone.com/az/cds/en_us...rInfoPages.htm
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Darrin 1955 Willys CJ-5 all original and the oldest CJ-5 on the road. 2001 Dodge Neon (wife's car) 1995 Jeep Grand Cherokee Limited Edition SOLD 1981 K15 Custom Deluxe 4X4, rusty but trusty wood hauler. SOLD 1993 S-10 4X4 Tahoe SOLD  Sign up with the Contact List RIP ESLL Last edited by Mickey_D; 04-08-2008 at 02:15 PM. |
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04-08-2008, 03:11 PM
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#3 |
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Moderator
Join Date: Jul 2006
Location: Ozark, MO
Posts: 4,893
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Re: TBI help
Thanks! I got a brain bubble late last night and found the same diagram staring right at me in my engine well. One open port was the EGR solenoid vent and the other was the EGR valve itself, I had just knocked off the hose. No wonder I burned throug half a tank of gas going through town!
__________________
'86 GMC C30 Crew ~ '86 C20 Crew ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '74K10 ~ '71 Cheyenne swb ~'50 3100 bagged ~ '80 Wife ~ Late model kids
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