brake master issue??

[Mac_55]

Hi

03 kj 330,000km runs and tows great

I've owned this jeep for 3 years the brakes have never felt strong

Replaced front and rear pads, rotors, pins and made sure the calipers are working properly with no leaks.

i have read A LOT of posts and tried the test of pump the brakes, hold , start engine and the pedal drops like a stone.

does this sound like a master cylinder issue? Jeep drives and stops but doesn't feel like it would lock up for an emergency, plus i get worried when braking slow or hard when towing my 16 foot boat

my wife likes to take the jeep when I'm on night shift and the pedal drops a lot before the brakes engage,

I'm thinking internal leak as the level is always at full


Thanks for anyone's input

 

[TypeRx]

Sounds exactly like a failed master cylinder. Replace it


Sent from my iPhone using Tapatalk

 

[LibertyTC]

X2 time for a new master cyl.
After install, bleeding will be required, and will be good to get new DOT3 brake fluid in there.
I also trailer a boat, and got new rotors with semi-metallic brake pads, much better now.

 

[M38 Bob]

My MC test; engine running, press pedal until moderate pressure is felt, let off ever so slightly, then ease back down. Do this last two steps repeatedly, if pedal goes "deeper" on any down press, piston is bypassing fluid and needs replaced.

New master cylindershould be bench bled before install. then bleed lines at MC when first hooked up. No need to bleed entire system unless you want to do a flush at same time.

Bob