73 vacuum line help
Thread Starter
Melting Slicks
Joined: Jul 2000
Posts: 2,107
Likes: 14
From: Lancaster PA
73 vacuum line help
I'm in the process of installing new vacuum lines on the 73 project car. (I bought it in pieces). I have some photos of other cars and I see a vacuum hose coming off the left front of the Q-jet, then going to the rear of the engine compartment and goes toward the left fender over the rear of the booster with 4 other hoses. Can someone please tell me where this goes to. Thanks, Craig :cheers:
Melting Slicks
Joined: May 2000
Posts: 2,125
Likes: 9
From: Crescent City, CA
Re: 73 vacuum line help (CF6873)
I goes to the evaporator canister that is located under your windshied washer reserve. There are three hoses that connect to this canister.
Hope this helps
Terry
Hope this helps
Terry
Thread Starter
Melting Slicks
Joined: Jul 2000
Posts: 2,107
Likes: 14
From: Lancaster PA
Re: 73 vacuum line help (trw)
Terry, thanks for the info. I have the larger hoses on the cannister but must have overlooked the little one. I'll check it out in the morning. Craig :chevy
Thread Starter
Melting Slicks
Joined: Jul 2000
Posts: 2,107
Likes: 14
From: Lancaster PA
Re: 73 vacuum line help (CF6873)
OK, I'm still perplexed. I have two ports on the top of the cannister. They are both pretty large. I have one going to the PCV and one going to the line to the fuel tank. On the bottom there is a large one that looks like it would be a drain, so I still don't know where to hook up the small one from the carb. My assembly manual does not show L48 so any help would be greatly appreciated. Craig
Melting Slicks
Joined: Sep 2000
Posts: 2,406
Likes: 418
From: Chester Virginia
Re: 73 vacuum line help (CF6873)
Mine has three connections on the the top. The nozzle on the bottom is a drain and nothing hooks to it. of the three on top one goes to the gas tank. The second large one goes to the PCV valve and the third and smaller connection does to the carb on the front drivers side. this two connections have the hoses run together up to the carb. I believe the smaller line actuators the valve in the top of the canister to pull the PCV vapors into the canister or pull the fumes from the gas tank into the carb.
In my AIM page 329 while stating for a LS4 it is similiar for the 350. Page 331 shows the gas tank vent line.
Roger
[Modified by RMS73, 11:05 PM 7/1/2002]
In my AIM page 329 while stating for a LS4 it is similiar for the 350. Page 331 shows the gas tank vent line.
Roger
[Modified by RMS73, 11:05 PM 7/1/2002]
Thread Starter
Melting Slicks
Joined: Jul 2000
Posts: 2,107
Likes: 14
From: Lancaster PA
Re: 73 vacuum line help (RMS73)
Roger, thanks much for the information. Someone must have changed the cannister on this car. I'll take another look at the AIM and try to figure out what to do with the small hose. Craig :cheers:
Drifting
Joined: Aug 1999
Posts: 1,468
Likes: 1
From: Kirkland WA
Re: 73 vacuum line help (CF6873)
Roger is setting you straight :yesnod:
There are three connections on the top of the vapor canister. One small one on the actual lid itself (this is the one that goes to the carb), a slightly larger one just next to the lid (goes to PCV), and a much larger one in the center (goes to fuel line)
Doc Rebuild has a good picture here
http://www.docrebuild.com/dr-r-web/PCV1.PDF
There are three connections on the top of the vapor canister. One small one on the actual lid itself (this is the one that goes to the carb), a slightly larger one just next to the lid (goes to PCV), and a much larger one in the center (goes to fuel line)
Doc Rebuild has a good picture here
http://www.docrebuild.com/dr-r-web/PCV1.PDF
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Melting Slicks
Joined: Jul 2000
Posts: 2,107
Likes: 14
From: Lancaster PA
Re: 73 vacuum line help (trw)
Okay, now I understand. The lid was missing so I didn't see where to put the small hose. I found the lid in a box of misc. parts so I should be good to go. Thanks for all the help. Craig :seeya