Re: Brake Booster related to oil leak? - Saab 9-5 Bulletin Board - Saabnet.com
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Re: Brake Booster related to oil leak?
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Posted by jeff02 [Email] (#2992) [Profile/Gallery] (more from jeff02) on Tue, 27 Nov 2012 19:54:11 Share Post by Email
In Reply to: Brake Booster related to oil leak?, Doug in NJ, Tue, 27 Nov 2012 06:42:22
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The Break Booster works on Air Vacuum. This charges the booster (Servo). The air lines also lead to a line to the intake of the engine. If there is a leak in the system (break booster) this may mean that there is not proper vacuum making it to the engine and the engine will not run correctly. In my case, the leak was so bad there was bad idle and stalling at idle. Once I replaced the lines and pinched off the break booster the car now idles properly. Now I have to repair / replace the break booster.

I have a hard time believing that improper vacuum from the can cause head gasket leaking. I do believe it would cause milage issues / improvements.

I know that in 2004 the head bolt problems should have been fixed, but in any case, check the head bolt torque and see if they are up to snuff. I would in any case replace the head bolts and retorque to spec. This is MUCH less costly than replacing the head gasket. It is worth a try. Especially if it is an Aero.

Also, you have to check the larger hoses coming from the back of the top of the valve cover. These have to be in very good condition. Trace them all the way down to the plastic box and then the other hoses. If there are any condition issues, replace as soon as you can. If there are issues this can cause poor oil flow to the turbo. Been there done that.

So bottom line I say no to Head Gasket Leaking.

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