<!-- from fixya rte -->Brake buddy running too much - BRAKE BUDDY 39509 - Vantage Selct Boost 39509

Brakes DO NOT affect the starting and running of an engine. If it has spark, fuel and air in the correct amounts, it will start and run, unless it has been internally damaged.
Make sure the battery is good and has a full charge.

First of all, I hope you got a new master cylinder with your disc brake kit. A new master cylinder should be bled before connecting the brake lines and then never allowed to pull in air during the rest of the bleeding process. A couple of fittings ans hoses should have come with the new master cylinder [see the kit listed for a picture]. If the master cylinder has an air bubble, you won't be able to properly bleed the rest of the system.
For the rest of the system you can make up a small catch bottle like the one pictured in the one man brake bleed kit; make sure the hose goes tot he bottom of the catch bottle. You have to cap the master cylinder reservoir before pumping the brakes or fluid will squirt out and all over; brake fluid is a like paint remover. Then start with the brake farthest from the master cylinder and bleed fluid out by having a buddy pump the brakes while you hold the catch bottle above the bleeder port so no air gets back in. [hint, put some pipe teflon tape on the outer threads only, not the inner end of the bleeder screws to seal the threads]. Check the master cylinder level often! If the brakes still are spongy after the first round of bleeding, have a buddy pump up the brake pedal with the bleeder screw closed and hold pressure on the pedal; you then open the bleed port until the pedal goes to the floor; have your buddy hold down the pedal until you close the port. Repeat on all brakes until the pedal is firm.

The rear brakes are adjusted to tight or the parking bbrake portion of the brakes was not installed properly or the parking brake is on.

Have a couple friends rock the car back and forth while your trying to get it out of Park. Usually this only happens if your parked on a hill and don't use the emergency brake. Have the key turned on but don't have the engine running. You don't want to run over yoour buddies.If you are on a hill you will have to stand real hard on the brakes after it's out of Park. Good luck.

Tires definitely the brakes I'm not sure but it's worth letting your local bike shop have a look.

Did you open the bleeder screws at all. If not you may not need to bleed the brakes just pump the pedal to bring the caliper pistons out and your pedal should feel fine. If you just want to blled anyways open all your bleeder srews and as the fluid level in your brake master cylider goes down refill with new dot 3 brake fluid (do not alow the master cylider to drain completely). Close bleeders when you get clean fluid through. Start at passenger rear corner and have a buddy press the brake pedal down. open bleeder, close bleeder after squirt of fluid then have buddy release pedal. Do this a couple of time per corner. Go from pass rear to drivers rear then pass. front ending with driver front. You just flushed your brake fluid. Hope this helps.

It sounds like you have more than one problem.

Recommend you contact your local RV Service department, or the service dealer who installed your Brake Buddy, or Brake Buddy directly: Contact Us BrakeBuddy Braking systems for motorhomes towing vehicle

You need to bleed the brakes to get all of the air bubbles out. Get a buddy to help you out. Make sure the reservoir is filled, put a hose on the bleed valve on the brake caliper and put it into a brake fluid bottle. Crack the bleed valve loose on the brake caliper and have your buddy pump the brake handle several times and then hold it in while you tighten up the bleed valve. Do this several times until you no longer see air bubbles in the tube running from the bleed valve to the brake fluid bottle. Be sure to check the reservoir frequently and keep it topped off.

hi buddy the front reservoir is on the front brake lever (right side) and the rear is drum so its by a cable

No need to have the car running. That just helps supply the vacuum to make them work better but has nothing to do with the basic brake setup.

It's a fairly quick fun job. Take your time have a buddy and lots of brake fluid and you can do as good a job as any shop. (no matter what they say ;-])