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From: "Howell, J. Brett" <jbh@tpghq.com>
To: "'Robert M. Pickrell Jr.'" <brnrubr@midusa.net>
Subject: RE: Petersburg Pro Questions (MR2 Problem)
Date: Thu, 27 May 1999 16:14:38 -0400
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I can't seem to post to Team.Net for some reason, but you are absolutely
correct. The inner liner gets a tear and then acts like a flapper valve -
the greater the pressure against it, the tighter it seals.
-Brett
-----Original Message-----
From: Robert M. Pickrell Jr. [mailto:brnrubr@midusa.net]
Sent: Thursday, May 27, 1999 4:03 PM
To: Burns, James B.
Cc: TeamZ3@aol.com; autox@autox.team.net
Subject: Re: Petersburg Pro Questions (MR2 Problem)
Generally what happens is the inside of the hose collapses. Not a hose
engineer,
but as I understand it the hoses are two or three pc. construction.
Rob
"Burns, James B." wrote:
> > -----Original Message-----
> > From: TeamZ3@aol.com [SMTP:TeamZ3@aol.com]
> >
> > The big question is: "HITH do you plug up a brake line hose?" and "Why
> > can't
> > you just unplug it with a pipe cleaner or something?"
> >
> I had the same question when it happened. My brakes get bled fairly often
> (extremely often back when I was road racing the car) and the fluid looks
> like new. The car only has 22K miles on it (but they are hard miles).
When
> the car started pulling to the left under braking I decided to bleed the
> brakes just to rule out the simple stuff first. When I loosened the right
> front bleeder valve and pushed on the pedal, the pedal was still hard. I
> completely removed the bleeder screw and still couldn't get any fluid to
> pump out. Then I removed the hose from the caliper and still couldn't
pump
> any fluid through. Then I removed the hose from the hard line at the
> chassis and was able to pump fluid out. So it sure looks like its a
plugged
> hose. There is no damage to the hose that can be seen or felt. Maybe the
> last time I changed brake pads (about a month ago), I damaged it somehow.
> But it seems like I would have noticed it pulling under braking before
> yesterday.
>
> As far as cleaning it out, the openings at the fittings are very small. A
> wire small enough to fit through there would be too flimsy to do any good.
> And if I couldn't get any flow through it from standing on the brake pedal
> then I doubt I could dislodge whatever is in there.
>
> The good news is that it looks as if TRD/Toyota Motorsports might come
> through and have some new brake lines to me tomorrow. I sure hope so.
>
> Brad Burns
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