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gomi_otaku
gomi_otaku, Technician
Category: Car
Satisfied Customers: 3457
Experience:  VW Technician, VW FastTrack, VW Academy, VW Certified
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Runs rough after 10 mins, kinda sounds like a vacuume leak

Customer Question

runs rough after 10 mins, kinda sounds like a vacuume leak from inside car, no check engine light appears.
Submitted: 1 year ago.
Category: Car
Customer: replied 1 year ago.
i replaced 2 vacuum hoses that looked cracked, tighten the bolts on the intake manifold. I believe its vacuum related just from the sound i hear from drivers seat once the car is warmed up.If it were a fuel injector wouldnt a check engine lite come on?
Expert:  gomi_otaku replied 1 year ago.

does it change if you step on the brakes?

Customer: replied 1 year ago.
no, its a 5 speed manuel so when applied brakes and push in clutch engine returns to a normal idle
Customer: replied 1 year ago.
I am working on my car today so if you have any additional help or an answer for my above reply I would appreciate your help!
Expert:  gomi_otaku replied 1 year ago.

It's possible that your brake booster is bad, if it changes when you step on the brake (and since you can hear it inside the vehicle)