'99 camry, brake booster hose diameter?

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Old 06 Apr 2016, 04:51 pm   #1 (permalink)
mrdarrett@gmail.com
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Default '99 camry, brake booster hose diameter?

I noticed that when my car was cold, just before starting the engine, the brake pedal is very stiff.

When starting the car when the engine is warm, this doesn't seem to be a problem.

I did some research which pointed to the brake booster hose. The one near the master cylinder seems fine, but this hose leads to the other side of the car, and there's another hose on the left side of the engine (when looking from the front of the car) leading into the left side of the throttle body. This hose for me is loose, even with the clamp there.

The hose looks kind of beat up anyway (little scar marks all over it) so I'd like to replace it. About a foot or so should do it.

I *think* it's a 1/4" hose, but... anyone have better info?

Probably it's a metric diameter hose (6mm?) but... I'll just try the American hoses from the local supply store first.

Thanks,

Michael
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Old 06 Apr 2016, 06:59 pm   #2 (permalink)
mrdarrett@gmail.com
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Default Re: '99 camry, brake booster hose diameter?

On Wednesday, April 6, 2016 at 1:51:19 PM UTC-7, mrda...@gmail.com wrote:
> I noticed that when my car was cold, just before starting the engine, thebrake pedal is very stiff.
>
> When starting the car when the engine is warm, this doesn't seem to be a problem.
>
> I did some research which pointed to the brake booster hose. The one near the master cylinder seems fine, but this hose leads to the other side of the car, and there's another hose on the left side of the engine (when looking from the front of the car) leading into the left side of the throttle body. This hose for me is loose, even with the clamp there.
>
> The hose looks kind of beat up anyway (little scar marks all over it) so I'd like to replace it. About a foot or so should do it.
>
> I *think* it's a 1/4" hose, but... anyone have better info?
>
> Probably it's a metric diameter hose (6mm?) but... I'll just try the American hoses from the local supply store first.
>
> Thanks,
>
> Michael



Looks like it's closer to 1/2 inch inner diameter...

Michael
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Old 07 Apr 2016, 01:46 pm   #3 (permalink)
mrdarrett@gmail.com
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Default Re: '99 camry, brake booster hose diameter?

On Wednesday, April 6, 2016 at 3:59:43 PM UTC-7, mrda...@gmail.com wrote:
> On Wednesday, April 6, 2016 at 1:51:19 PM UTC-7, mrda...@gmail.com wrote:
> > I noticed that when my car was cold, just before starting the engine, the brake pedal is very stiff.
> >
> > When starting the car when the engine is warm, this doesn't seem to be a problem.
> >
> > I did some research which pointed to the brake booster hose. The one near the master cylinder seems fine, but this hose leads to the other side of the car, and there's another hose on the left side of the engine (when looking from the front of the car) leading into the left side of the throttlebody. This hose for me is loose, even with the clamp there.
> >
> > The hose looks kind of beat up anyway (little scar marks all over it) so I'd like to replace it. About a foot or so should do it.
> >
> > I *think* it's a 1/4" hose, but... anyone have better info?
> >
> > Probably it's a metric diameter hose (6mm?) but... I'll just try the American hoses from the local supply store first.
> >
> > Thanks,
> >
> > Michael

>
>
> Looks like it's closer to 1/2 inch inner diameter...
>
> Michael



I ended up buying 2 feet of 9.5mm hose from O'Reilly. It was a little loose, but new clamps fixed that after tightening. I only needed one foot of hose, for future reference.

9.5mm = 3/8", if it helps.

Probably the original size was 8mm. Dunno.

Michael
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