|
|
|
|
| Author |
|
|
Registered
Join Date: Jul 2006
Location: Daytona Beach, FL
Posts: 310
|
Vaccum Lines - Not The Typical ?
I've been through the posts regarding the vaccum lines and haven't found an answer. I've looked at the diagrams and can't find an answer so I'm going to ask.
I have an 88 944 NA. I have removed the AC because it is a full race car. I am having a problem with my brake feeling a bit spongy and am thinking it might be the vaccum to the brake booster. I see from the diagram that the line from the booster goes to the ejection pump. Since I don't have AC and the AC lines that connected to the ejector pump are gone am I missing out on the vaccum? I just have some paper towl stuffed in there to keep dirt out. On my other 944 the vaccum line from the booster has a Y on it and one end goes to the ejection pump and the other to a canister near the battery. I have also removed the canister so I have a line that goes directly to the ejection pump. Could it also be that I need the canister to get the right vaccum? The motor runs fine but the braking is a concern. Let me know your thoughts. Thanks Brian
__________________
1989 944 Turbo Cup Replica PCA Space Coast Region #44 |
||
04-15-2008, 12:36 PM
|
|
|
Registered
Join Date: May 2005
Location: Wichita KS
Posts: 599
|
Lack of vacuum to the booster would make the pedal stiff, not spongy.
A spongy feeling brake pedal would make me thing you either have air in the lines, or even a bad seal in the master cylinder. My suggestion would be to bleed the brakes.
__________________
Jack 86 Porsche 951 - LR 3" Exhaust, MaxHP chips and ProfecB @ 15psi 83 Porsche 944 - Still under re-construction. 08 Suzuki Boulevard M109R LE 02 Nissan Altima SE3.5 |
||
|
04-15-2008, 02:15 PM
|
|
|
Registered
Join Date: Jul 2006
Location: Daytona Beach, FL
Posts: 310
|
Sorry I forgot to say I've blead the brakes and have a clear stream with no bubbles. I was thinking it was the master cylinder also but wasnt sure. I dont want to replace parts if I dont have to.
Thanks Brian
__________________
1989 944 Turbo Cup Replica PCA Space Coast Region #44 |
||
|
04-15-2008, 02:17 PM
|
|
|
Registered
|
A cocked pad could make for a spongy pedal, so too could a bad master.
__________________
Rick 93 968 (My summer car), 05 Cayenne S (My winter car), 79 924 (Wife's summer car), 02 C230k (Wife's winter car), |
||
|
04-15-2008, 02:27 PM
|
|
|
Quality
Join Date: Oct 2007
Location: Philadelphia area and Morristown NJ
Posts: 951
|
Bleed the brakes with a vacuum bleeder (or power bleeder). Significant difference, epsecially if the car is not perfectly level while bleeding.
__________________
85.5 944 NA 5spd - Sold but not forgotten 89 951 Turbo S - Revival in progress... 
|
||
|
04-16-2008, 06:42 AM
|
|
|
Registered
Join Date: Jul 2006
Location: Daytona Beach, FL
Posts: 310
|
Thanks for the suggestion however a power bleeder is how I blead the brakes. I've ordered a booster and master cylinder so Im going to give that a try. Hopefully they will firm up. I run race pads in them so once I get them warmed up they seem ok but until then they are terribly soft
__________________
1989 944 Turbo Cup Replica PCA Space Coast Region #44 |
||
|
04-16-2008, 07:07 AM
|
|
|
