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Oil in Brake master cyclinder causes brake light to come on?

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Old 11-25-2006, 02:13 PM
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Default Oil in Brake master cyclinder causes brake light to come on?

My brake light is on and I realize that somone filled up my brake master cylinder w/ oil. Is that causing the brake light to come on? Is it even safe? Can i remove the oil or i need to replace the brake master cylinder?

thanks.
Old 11-25-2006, 02:20 PM
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how do you know its oil?
clean oil and brake fluid can look very similar

The brake light is pretty dumb - if the float in the mc falls, the light comes on; if the ebrake is up, the light comes on.
The float wouldnt know the difference between oil and brake fluid.
Old 11-25-2006, 02:28 PM
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Default Re: Oil in Brake master cyclinder causes brake light to come on? (R-81 Coupe)

Yes, you can remove the oil by flushing your system with brake fluid. Don't know if the oil will affect any of the seals in the calipers.
Old 11-25-2006, 02:28 PM
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Default Re: (pdiggitydogg)

It smells like oil.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlueIntegraBoy &raquo;</TD></TR><TR><TD CLASS="quote">Yes, you can remove the oil by flushing your system with brake fluid. Don't know if the oil will affect any of the seals in the calipers.</TD></TR></TABLE>

If I flush it out will my brake light go off?
Old 11-25-2006, 02:30 PM
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Default Re: (R-81 Coupe)

Oil is slimier (viscous) than brake fluid
Old 11-25-2006, 02:39 PM
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guess it depends on the fluid and oil you use

either way, like i said, the light isnt that smart
if the float...floats...the light will go off (assuming the electrical is sound)
If you think its oil, just flush it...
Old 11-25-2006, 02:44 PM
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Default Re: (pdiggitydogg)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pdiggitydogg &raquo;</TD></TR><TR><TD CLASS="quote">guess it depends on the fluid and oil you use

either way, like i said, the light isnt that smart
if the float...floats...the light will go off (assuming the electrical is sound)
If you think its oil, just flush it...</TD></TR></TABLE>


so the float isn't floating, that's why my light is on?
Old 11-25-2006, 02:47 PM
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maybe...
Go out, turn the car on, pull the mc cap, push the cap's float up manually and see if the light goes off.

if it doesnt turn off, its something else (check your ebrake electrical connector next)
Old 11-25-2006, 02:47 PM
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Default Re: (BlueIntegraBoy)

not designed to be compressed though. bleed a back wheel till you get brake fluid out of it. than do the other 3 wheels. shouldnt hurt nothing , if you get it out.
Old 11-25-2006, 03:27 PM
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if it is infact oil.. thats gonna be alooottt of bleeding good luck i hope you didnt pay for a service and the douche put oil in your MC.. if so i would go back and raise hell how exactly did that happen anyway im curious?
Old 11-27-2006, 10:02 AM
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Default Re: (jdeemseerx)

IS THE FLUID BLACK?Cud mean the seals in ur mc are toast.still wudnt make the light *** on,wat model is your car?
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