brake issue

[mike561]

This is starting to annoy me, when i come up to a red light, i go to press the brake down so the car stops of course, but after like five seconds i can feel the brake pedal push down much further all the way to the floor. the car stops fine and the pedal doesnt go all the way to the floor at first til i have it pressed for a bit. i checked the brake fluid and its full....

[silicon212]

Master cylinder time!

[mike561]

kinda figured, ill be looking into that next. would the replacement of the master cylinder involve having to bleed the brake system? seems like its simple

[evildragon]

When my father did the MC on his Crown Vic, he did need to bleed it until the pedal stopped going down all the way with the new MC.

[silicon212]

Originally Posted by evildragon

When my father did the MC on his Crown Vic, he did need to bleed it until the pedal stopped going down all the way with the new MC.

You 'bench bleed' the master cylinder, but you shouldn't have to bleed the whole system unless there's a leak somewhere else. Which could still be the case... Check the inside of each tire to see if there's any 'throwoff'.

Bench bleeding is detailed in the instructions that come with the cylinder. The better cylinders will come with a bleed kit.

[mike561]

ok, i dont think theres any other leaks cause the fluid never needs filling

[silicon212]

Definitely master cylinder then. Just make sure the new one is properly and fully bench bled BEFORE you try to drive the car with it.

[mike561]

k sure will, thx

[bobss396]

Deffo the master. It is bypassing internally which doesn't produce a leak. It spits the fluid back into the reservoir.

Bench bleed it, install it and if the pedal is not firm, you may need to pop each bleeder once. Have someone in the car and gently press the pedal, do nt go to the stop with it, crack each bleeder in turn maybe an 1/8 turn.

Bob

[PeteA216]

Once you have the master cylinder properly bench bled and installed, I'd bleed the whole system anyway. Naturally when you're opening up the brake system, you should bleed it because you will get some air in the lines which can make for a spongier pedal and less stopping power, and not to mention while you have the lines open you're exposing the fluid to the open air so that while you're working, the brake fluid will be absorbing moisture and over the course of time time the moisture collected in the fluid will corrode the brake components from the inside out.

Now that I read what I typed I made it sound much worse than it is. The brake fluid by nature absorbs moisture, so since it'll be exposed to open air longer than the norm it will collect some moisture, but nothing terminal and since you will get some air in the lines themselves from opening up the system, it really isn't a bad idea to bleed the whole thing. It doesn't take long at all (assuming you keep your bleeders neverseized) and you'll be left with nice firm brakes, fresh fluid, and piece of mind.

[mike561]

I talked to the guy at my work today and he said to try and just bleed the system first, but i think im still gonna replace the M.s. all these car problems are really starting to come at one time, first the steering hose, then the brakes, some a**hole stole my license plate decal too, another expense

[evildragon]

Originally Posted by mike561

some a**hole stole my license plate decal too, another expense

Think that's bad?

I'm at work right, and my Caprice won't start come time to leave. It didn't make sense, everything was working, but look at the gas gauge. "E".

I filled it up that morning!

Some dick wad syphoned the whole freakin 23 gallons from my tank! They must have used a pump.

[silicon212]

Originally Posted by evildragon

Think that's bad?

I'm at work right, and my Caprice won't start come time to leave. It didn't make sense, everything was working, but look at the gas gauge. "E".

I filled it up that morning!

Some dick wad syphoned the whole freakin 23 gallons from my tank! They must have used a pump.

You know, that crap pisses me off to no end. I had about 12 gallons jacked from my car about three weeks ago while parked in my apartment complex. My solution is to install a lock on the rear license plate so you need a key to lower it to get to the gas filler!

[evildragon]

Originally Posted by silicon212

You know, that crap pisses me off to no end. I had about 12 gallons jacked from my car about three weeks ago while parked in my apartment complex. My solution is to install a lock on the rear license plate so you need a key to lower it to get to the gas filler!

That won't stop them from taking a drill and putting a hole in your tank.

That's happening here in Orlando.

[mike561]

yeah i've got one of those locking gas caps, if someone wants to drill into your tank they can do that with any car too