Muncher Posted March 3, 2021 Share Posted March 3, 2021 So I'm thinking I have a vacuum leak. It is idling at around 400 rpm and will make a whistling noise and dip down to almost 0 rpm but go up and down for a couple of seconds. I thought maybe it was a pulley at first because the whistling is the loudest in the front of the engine but seeing it surge in rpms makes me think vacuum lines. Also smells alot more like gas now while running. Where should I check for messed up lines and how do I fix them? Link to comment Share on other sites More sharing options...
jdog Posted March 3, 2021 Share Posted March 3, 2021 Check the bolts on the intake, any hoses on the motor is essential a vacuum hose Link to comment Share on other sites More sharing options...
Muncher Posted March 3, 2021 Author Share Posted March 3, 2021 59 minutes ago, jdog said: Check the bolts on the intake, any hoses on the motor is essential a vacuum hose ok i will check that. any particular thing up front that i should check? Link to comment Share on other sites More sharing options...
jdog Posted March 3, 2021 Share Posted March 3, 2021 theres two main vacuum lines in the tee on the front of the manifold they are below the lines going to the airbox/valve cover Link to comment Share on other sites More sharing options...
Muncher Posted March 3, 2021 Author Share Posted March 3, 2021 This is a video of where the sound is coming from. Right near the ac pulley but at the same time I do have a rough idle. I'm not sure what to check now. I checked the intake bolts and there tight. Snapchat-1823912503.mp4 Snapchat-1823912503.mp4 Snapchat-1823912503.mp4 Snapchat-1823912503.mp4 Snapchat-1823912503.mp4 Snapchat-1823912503.mp4 Link to comment Share on other sites More sharing options...
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