2003 VW Golf - engine shuddering, slow acceleration

[joshp86]

Hey folks, I've been having this issue for a few days, and your guidance would be greatly appreciated!

My engine started shuddering rather considerably a few days ago, seems to be misfiring. Happens both while idling and accelerating. Thought it could be a bad spark plug, and was prepared to replace them. Which is doable, but not easy, considering they're not very accessible with this particular engine. But when I lifted the plastic cover off the engine to take a look, I noticed this tube (circled in picture) had been worn away considerably in one spot. In fact, it's barely attached.

Now I'm no expert, but I've read that a leaking or disconnected vacuum hose can cause exactly the type of issue I'm experiencing. I'm wondering if the object pictured is in fact a vacuum tube. Might that be the issue? If so, how easy would it be to repair it myself? Thanks!

[65comet]

That line does pull vacuum from the intake manifold. If it is leaking, replace it and see how it runs.

[lacabana]

Yes i can see the vacuum tube. Best try is replacing it for a new one...