Loss of power

[Kyser]

Recently Ive seemed to lose alot of power and the car just doesnt feel right. Vacuum reading went from my standard 20/21 down to 15 and its also idleing very ruff. Sprayed carb cleaner around the intake trying to see if theres a leak anywhere to no avail. Any help would be appreciated.

1990 Tsi Awd, 170k, 5spd manual

 

[majik2k5]

Could be a leak somewhere. Put soapy water on your intercooler pipes and such and look for any bubbling.

 

[majik2k5]

Also, check out the fuel filter. Before I replaced mine, it always wanted to die at idle, and it felt really miserable driving around.

 

[BOBS90TURBO]

Really sounds like a intake manifold leak, It can be hard to get the spray in certain spots to check it that way, I would take a piece of vac line or small tube about 2 feet long and put one end in your ear and take the other end and run it along the manifold gasket at idle and listen, even do a boost leak test from the trottle body.