vacuum lines
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Junior Member
Joined: Sep 2003
Posts: 23
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From: Strongsville, OH
Car: 85 Trans Am
Engine: 305 LG4
Transmission: 700-R4
vacuum lines
I recently installed a new intake on my LG4 with a holley 600 and I can't get it to idle properly. It idles very shaky with the rpm's bouncing around and there is a lot of knocking coming from the engine compartment. I'm wondering if I have my vacuum lines hooked up right. This is how I have it hooked up: I have on line from the distributor vacuum canister to the carb, I have a line from the carb to the brake booster and pcv valve, and I have one line that runs into the firewall by the wiper motor from the carb (I have no idea what this line does). I do not have any lines into my manifold and I'm wondering if I should. Any help would be appreciated.
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Joined: Jan 2000
Posts: 20,981
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
In the interests of safety, the brake booster should have its own line. Use seperate ports for the brakes and the PCV.
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