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Where does vapor canister line hook up to TPI? Throttle body?

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Old Jun 28, 2011 | 10:58 AM
  #1  
327_TPI_77_Maro's Avatar
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Where does vapor canister line hook up to TPI? Throttle body?

Hi guys I have a TPI swap that is running great but I think I hooked the vapor canister vacuum source up to the wrong port. I used a full manifold source on the rear passenger's side of the TPI manifold as the vacuum source supplied to a vapor canister that I got from a TPI parts car. Is the vacuum source for evap actually supposed to be the throttle body? If so which port.

Also where is the EGR vacuum source supposed to be? I used the small nipple on the bottom of the throttle body as the EGR vac source.

Thanks

Steve
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Old Jul 1, 2011 | 11:20 AM
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From: Europe
Car: '88 white Iroc-Z
Engine: 305 TPI
Transmission: T5
Axle/Gears: 3.42
Re: Where does vapor canister line hook up to TPI? Throttle body?

If I remember correctly,both the EGR and EVAP vacuum were hooked together to the vacuum port on the throttle body. That's on a '88 LB9. EGR is long gone but I've hooked the EVAP line back to the TB. Check the underhood vacuum line routing sticker for your specific year as there are not all the same (should be available on this forum somewhere).
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Old Aug 22, 2011 | 11:14 PM
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From: Daytona Beach
Car: 1988 Formula
Engine: L98
Transmission: TH-700-R4
Axle/Gears: BW 9 bolt 2.77
Re: Where does vapor canister line hook up to TPI? Throttle body?

on the throttle body
The pvc goes on the top vent, it is not a vac line the vac for the PVC system is on drivers side betweene the runners

Then the evap can goes on the bottom full vac line.
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Old Aug 23, 2011 | 06:05 AM
  #4  
z28romance's Avatar
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From: massachusets
Car: 87 z28 stock
Engine: 305 tpi
Transmission: 700r4
Re: Where does vapor canister line hook up to TPI? Throttle body?

vac hose routing diagram.
Attached Thumbnails Where does vapor canister line hook up to TPI? Throttle body?-yncvacuumhosesizes.jpg  
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Old Dec 12, 2011 | 10:45 AM
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Re: Where does vapor canister line hook up to TPI? Throttle body?

are the red numbers the line sizes?

Last edited by JeffroZ; Dec 12, 2011 at 12:02 PM.
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Old Dec 12, 2011 | 01:38 PM
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rarebmx's Avatar
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Car: 89 IROC/89 Vert/87 Vert/89 GTA Vert
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Axle/Gears: 9" 2.77/9" 3:23/9" 3:42
Re: Where does vapor canister line hook up to TPI? Throttle body?

Originally Posted by JeffroZ
are the red numbers the line sizes?
Yes
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