Hooks Up To .....
12-16-2012, 03:53 PM
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Hooks Up To .....
1980 GMC Cargo Van Stroked 383, no power brakes on startup yesterday. Went to manual as expected. Running errands and started rolling from one of my stops when I heard a clunk. Looked back after stopping to check and found a piece of tubing around 5 feet long. Female on one end and a two prong male connector on the other end. Pretty sure it was mine but could see no noticeable connections missing when checking under the hood. Any ideas before I get pics? Thanks!
12-16-2012, 08:00 PM
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That looks like a vacuum line or a washer fluid line. If it is a vacuum line it could affect your brakes. With that missing you engine vacuum would be disrupted. If you have it running and listen under the hood you should be able to hear a hissing sound. You find where its coming from and thats where that was hooked up. If you still have the emissions label under the hood that should show where the vacuum lines run.
12-16-2012, 09:20 PM
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That looks like a vacuum line or a washer fluid line. If it is a vacuum line it could affect your brakes. With that missing you engine vacuum would be disrupted. If you have it running and listen under the hood you should be able to hear a hissing sound. You find where its coming from and thats where that was hooked up. If you still have the emissions label under the hood that should show where the vacuum lines run.
Somewhere around the carb/intake manifold for the female connector. I will take a look and a listen right after work. Thanks.
12-17-2012, 09:05 PM
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Okay! We have brakes again! Thanks! It was pretty evident when I got in there. But the hose pictured was not part of the repair. It must have pulled the vacuum connection apart whenever it ripped out, because I had brakes as soon as I reconnected the two vacuum hoses that were just setting there! Go figure! Now to locate where the pictured one goes! Noticed missing connections on the charcoal canister and the trannie vacuum kick-down is being fed from a T from the brake vacuum line. Should be brakes only, right? Shouldn't trannie vacuum connect to one that has no vacuum at idle along with vacuum advance? One hose at a time I guess!
Hope your Monday was a good one!
Hope your Monday was a good one!
12-17-2012, 10:20 PM
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I am not a expert on vans. But I have never seen any vehicles that had anything connected into the vacuum booster line. I have always seen them run straight from the engine to the brake booster.
12-18-2012, 08:37 AM
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When you lose a vacuum line from the engine, even if not the one connected to the brake booster, the engine loses enough vacuum to affect the brakes.