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BSPerformance · 11-02-2008, 12:15 PM

I just completed a Sr swap an don't know if I hooked somehting up wrong or what. I have no brake pedal its not stiff or anything, theres nothing to it. When I push the brakes at idle it will make the car stall. I have the master cylinder hooked up to the intake manifold.

projectRDM · 11-02-2008, 12:58 PM

Sounds like the check valve is either backwards or defective. Check it and see.

g6civcx · 11-03-2008, 05:37 AM

The one-way check valve goes between the booster and the vacuum source. It only lets vacuum go one way and not the other = one-way check valve.

Follow the FSM diagram to test the one-way check valve. There is a picture of a guy blowing and sucking on the valve.

Then check for vacuum leak in the hose itself, or possibly the booster connection.

**mrmephistopheles** · 11-03-2008, 06:05 AM

Quote:

Originally Posted by g6civcx

There is a picture of a guy blowing and sucking

g6civcx · 11-03-2008, 06:18 AM

Quote:

Originally Posted by mrmephistopheles

You can't make this stuff up.

I submit Exhibit A:

11-02-2008, 12:15 PM	#1
BSPerformance Zilvia Addict Join Date: Aug 2004 Location: Philly Age: 32 Posts: 863 Trader Rating: (9) Feedback Score: 9 reviews	No brakes I just completed a Sr swap an don't know if I hooked somehting up wrong or what. I have no brake pedal its not stiff or anything, theres nothing to it. When I push the brakes at idle it will make the car stall. I have the master cylinder hooked up to the intake manifold. __________________ a silvia

11-02-2008, 12:58 PM	#2
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 47 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	Sounds like the check valve is either backwards or defective. Check it and see. __________________ FORMERLY R240NA Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com

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11-03-2008, 05:37 AM	#3
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 5,764 Trader Rating: (5) Feedback Score: 5 reviews	The one-way check valve goes between the booster and the vacuum source. It only lets vacuum go one way and not the other = one-way check valve. Follow the FSM diagram to test the one-way check valve. There is a picture of a guy blowing and sucking on the valve. Then check for vacuum leak in the hose itself, or possibly the booster connection.