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Hey everyone. Just wanted to get an opinion.
I have the original master cylinder and brake booster on my 2008 2.2L with 330,000kms. The other day the brake light came on so I checked it and the reservoir was pretty much empty.
I then checked to see if the master had sucked fluid into it by dipping a piece of paper into it and it came back totally wet. I then pumped out the fluid from the master, filled the reservoir with new brake fluid, took it for a test run and pumped brakes. It was ok but I went ahead and ordered all new parts for it. I haven’t got around doing the job yet, just had a baby, work has been insanely busy…so I checked the fluid about a month later (yesterday) all levels are fine and no fluid in the master still.
so my question being, what do I do? Do I go ahead and replace it all or no? Anyone else experience this? Maybe a slow leak over time caused this?
I am shocked that everything is fine now.
Where did the fluid go?
Places it could go:
the ground
into the booster
into the calipers because the pads are worn out.
I think he meant booster where he say's master.
The fluid went into his booster which he drained or siphoned.
As far as doing the job I wouldn't do a job that don't need to be done.What happened is the master likely has a bad seal at the rear of the spool valve. I'd replace the master only.
Yes sorry my mistake. that is what I meant to say. And yes I siphoned the fluid out of the booster.
It did not leak on to floor and brakes are fine.
The amount siphoned out was pretty much the amount of the brake fluid reservoir. Took a full bottle to refill it.
Haven’t looked into the process much yet so not sure if it’s worth only doing the master and not the booster with it (if all of it has to come out)
Looks to be a bit of an invasive job
