Join Date: Feb 2007
Nominated 16 Times in 67 Posts
TOTW/F/M Award(s): 28
Thanked 5,201 Times in 4,712 Posts
Re: Laguna 2 dci brake pedal hard
I suspect the small black box you refer to is the
actuating solenoid but without a picture or better description I can't be certain.
The vacuum pump has two outlets - one for the
actuator and a larger one for the brake servo.
You'll need to check the plumbing going to the servo.
Also check in the passenger footwell for signs of hissing as it is known for the air seal to fail thus loosing brake vacuum assistance.
Currently in madnoel10's garage:
Honda Civic 1.4l