brake concern

[nashville67]

hey guys so i had my brakes replaced and the idoits disconeeted the drivers front calper :redbrick: new guy well after the bleed all the brakes and and now my pedal goes to the floor every once in a while pump the peda 1 or twice and its fine but it olny seems to do that after iam on the gas hard cant figure it out my shop teacher say master clyinder but there is no leaking fluid or anything and when the pedals stiff it feels just fine its kinda scary some times plus i dont wanna get hurt any imput would be great full

ps its and 88 4 bange witha 5 speed running 31s

 

[4runner_kid]

hey guys so i had my brakes replaced and the idoits disconeeted the drivers front calper :redbrick: new guy well after the bleed all the brakes and and now my pedal goes to the floor every once in a while pump the peda 1 or twice and its fine but it olny seems to do that after iam on the gas hard cant figure it out my shop teacher say master clyinder but there is no leaking fluid or anything and when the pedals stiff it feels just fine its kinda scary some times plus i dont wanna get hurt any imput would be great full

ps its and 88 4 bange witha 5 speed running 31s

Still have air in the line's is what it sound's like to me. Re bleed all the brake's.

 

[KidVermicious]

What he said. You've got a bubble in there somewhere.

 

[Hyde802]

What about the check valves in the vacuum line going to the break booster. Sounds like one of them might be failing...but if not that, but I am also suspicious of the master cylinder.

 

[cometobanks]

If the symptom only arose after you had brake work done, thats what caused it. take that shop to task and have them fix the problem. 3X what the other guys said, you have some air in your line yo.

 

[nashville67]

i wish i could take it back but they got new owners who say its not there problem :bash: and how would i check the check valves and iam going to rebleed them whts the best way to go about it closest to the master cylnider out or farthest in

 

[cometobanks]

search it.