Vacuum leak ford f150

Vacuum leak at rear of intake. Thread Tools.

Ford F owners are generally pleased with the reliability of their Ford pickup trucks. Even so, there are a few issues that are quite common occurrences and can cause significant problems. In particular, the issue is common on Fs made between and Eventually, Ford redesigned the system to prevent it from being a frequent source of failures, which is why years and later are not affected. Thankfully, the issue on the affected models is easily diagnosed and is possible to fix without a specialized repair shop.

Vacuum leak ford f150

Log in. Sign up. Jump to Latest Follow. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Status Not open for further replies. Joined May 4, Sorry if this has been posted before but ai couldn't find anything on the subject. I had my hood up today while the truck was running and heard a hissing first time I've heard it but also the first time truck was running with me under the hood. I found a hose that was not connected to the upper intake manifold port behind the intake y.

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Truck began to misfire, sputter while driving, idle really rough, loss hp. I replaced the coil, problem solved. Loss hp, shaking, idle rough, sputtering when I drive. So I go back to auto zone today to hook up the tester again. He said it read. He told me I have a vacuum leak, not a bad coil.

How to check for a vacuum leak? Thread Tools. Ok so i'm pretty sure the more people i talk to and the more i really think about it that i have a vacuum leak somewhere.. I hear that poor mileage can come form a vacuum leak.. When i first but in my vacuum gauge i had And on my way home yesterday idling in my driveway i had I sprayed starting fluid all under my hood and found no idle pick up How do i go about finding a vacuum leak??? Also as soon as i start my truck should i have maxium vacuum or will it take 5 or 10 minutes..

Vacuum leak ford f150

Thread Tools. Hello, I've read dozens of threads which attempt to troubleshoot 4. I'd appreciate the help if anyone has any suggestions. Here's the background: Model: F Engine: 4. I say "roughly" because the idle speed sometimes hovers around RPM, particularly between shifts. An inspection of the throttle linkage does not reveal any trouble. Also, the idle set screw still has its paint and does not appear to have been tampered with. It appears to be bottomed out. The EGR tube behind the intake manifold does not appear to have any holes are leaks. Also, the exhaust is in sound condition.

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Though not sure why the truck would run poorly with it plugged in. Likes: 3. In particular, fuse 11 is responsible for the IWE solenoid. Send a private message to Workingstiff. Email this Page. Plug it back on and do an idle relearn process. This is a power brake hose assembly. Didn't seem to help anything. Originally Posted by crandallf If the issue is picked up by the diagnostics, it will likely list either a P or a P trouble cod e. No hoses. So I go back to auto zone today to hook up the tester again. Ford F owners are generally pleased with the reliability of their Ford pickup trucks.

Suggested Test 1: With the engine cold, visually and physically check all vacuum hoses. The most common vacuum leak problem is the PCV tube's elbow, where it connects to the intake manifold.

Ford F owners are generally pleased with the reliability of their Ford pickup trucks. No idle or drivability issues. The leak then prevents the IWE hubs from engaging properly. It'll then pick up to about rpms and idle roughly. Though not sure why the truck would run poorly with it plugged in. Before replacing the solenoid valve, you should make sure that it is, indeed, the component causing the underlying problems, as the issue can also be caused by worn-out vacuum lines , which become brittle over time, or faulty hubs themselves. Sometimes, you might even hear a pronounced grinding noise while driving. Received 30 Likes on 26 Posts. Find all posts by Johnny Paycheck. Perhaps it's the line going to your brake booster? Advanced Search. Send a private message to 1 Alibi 2. If that checks good, then we need to consider a fuel injection issue. It's very noticeable with my aftermarket exhaust.