[MBZ] Brake problem: 126, 1990 300S

2006-08-23 Thread rmcmail

Re: [MBZ] brake problem

2005-11-22 Thread Peter Frederick
Most likely a defective brake booster. It should hold vac indefinitely. I busted one on the old dodge Aries -- stalled every time I stepped on the brakes. Peter

Re: [MBZ] brake problem

2005-11-22 Thread David Brodbeck
Peter Frederick wrote: Most likely a defective brake booster. It should hold vac indefinitely. Sometimes the brake booster and master cylinder fail together. What sometimes happens is the M/C rear seal fails and fills the brake booster with brake fluid. The brake fluid eats a hole

Re: [MBZ] brake problem

2005-11-22 Thread Kaleb C. Striplin
I thought luther said his brakes were spongy. If he didnt have power assist they would be hard. David Brodbeck wrote: Peter Frederick wrote: Most likely a defective brake booster. It should hold vac indefinitely. Sometimes the brake booster and master cylinder fail together. What

Re: [MBZ] brake problem

2005-11-22 Thread David Brodbeck
Kaleb C. Striplin wrote: I thought luther said his brakes were spongy. If he didnt have power assist they would be hard. Yeah, I don't think what I described is Luther's problem. If the brakes are spongy he's either got air in the system or a bum master cylinder. Sometimes they leak

Re: [MBZ] brake problem

2005-11-22 Thread Hans Neureiter
When my MC went on the blink, the pedal went almost to the floor on the first push. Scary. But I had a combination of failing vac.pump and a bad MC. On 11/21/05, David Brodbeck [EMAIL PROTECTED] wrote: Kaleb C. Striplin wrote: I thought luther said his brakes were spongy. If he didnt have

[MBZ] brake problem

2005-11-21 Thread Luther Gulseth
My '82 300CD's brakes are funky. They are very spongy and you have to push them harder to get the same break action. I capped off all vacuum lines and checked the vacuum and have more than 20hg at idle and it drops 5-8hg each time I push the brakes and quickly builds back up. I drove the car

Re: [MBZ] brake problem

2005-11-21 Thread Hans Neureiter
Luther; I had very similar problem on my 300SD. Turned out to be a broken poppet valve (exhaust, to the engine) in the vacuum pump. On 11/21/05, Luther Gulseth [EMAIL PROTECTED] wrote: My '82 300CD's brakes are funky. They are very spongy and you have to push them harder to get the same break

Re: [MBZ] brake problem

2005-11-21 Thread Jim Cathey
My '82 300CD's brakes are funky. They are very spongy and you have to push them harder to get the same break action. They need bleeding. [vacuum] dropped to almost zero after about 15min. Is this normal? Yes, I think so, depending on where you measured it. At the tap for vacuum

Re: [MBZ] brake problem

2005-11-21 Thread Kaleb C. Striplin
Vacuum is not your problem. First try bleeding all the brake lines. If that doesnt work, your master cylinder is bad. Luther Gulseth wrote: My '82 300CD's brakes are funky. They are very spongy and you have to push them harder to get the same break action. I capped off all vacuum lines

Re: [MBZ] brake problem

2005-11-21 Thread Marshall Booth
Kaleb C. Striplin wrote: Vacuum is not your problem. First try bleeding all the brake lines. If that doesn't work, your master cylinder is bad. I agree with Kaleb (and hope we're right ;-). Marshall -- Marshall Booth (who doesn't respond to unsigned questions) der Dieseling

Re: [MBZ] brake problem

2005-11-21 Thread Luther Gulseth
] brake problem My '82 300CD's brakes are funky. They are very spongy and you have to push them harder to get the same break action. They need bleeding. [vacuum] dropped to almost zero after about 15min. Is this normal? Yes, I think so, depending on where you measured it. At the tap

Re: [MBZ] brake problem

2005-11-21 Thread Marshall Booth
Luther Gulseth wrote: Here's the rest of the story. All 4 calipers were just rebuilt and 4 new hoses were installed. My indy thought the MC was suspect immediatly out of the box (it's a rebuild from Autozone). He bled nearly 1 whole qt of Valvoline Syn+ through the system. The brakes all