I have a 1987 dodge pu that the breaks went out on. We've replaced the MC break lines power booster and even cleaned and bled out the pro portioning valvue. Still have no peddle. You can pump the breaks 50 times and eventually the front breaks grab. We are pretty much at our wits end. There is a three foot stream of break fluid that shoots from the bleed valvue and we are not showing any air in the system. If any of you have ideas of what to do next please help.

Thanks

 

Moving to the correct section. Welcome to DF.

 

Sounds like a bad master cylinder. Are you bleeding the brakes in the correct order? (Passenger rear, drivers rear, passenger front then drivers front).
Also, check to see if the rubber lines are 'ballooning' under pressure.

 

We found the issue got it fixed thank you for your reply. Sorry. After going through the system. We noticed the previous owner had put the front calipers on wrong side. We changed a wheel cylinder which caused air to get trapped in them.

 

Would you mind posting the fix so if someone else ever has the same issue they know where to look? Thanks.

 

With the calipers on the wrong sides the bleeder would be at the bottom instead of the top. That would trap air in the caliper.