I am trying to do a brake flush and cannot seem to get any pedal once I am done. I am using a Motive Power bleeder, started at the right rear and moved around the car. I had an issue with one of the bleeders not flowing well so I pumped the brake pedal while the motive was attached and pressurized. After flushing out all the old fluid I am not getting any more air out of the system but I have no pedal. Reading some posts here, some have describe possible issues with pumping the pedal and screwing up the mater cylinder. Other posts show that you need to pump the pedal to the floor when replacing the MC. Any advice on what to do to get the pedal back would be appreciated.

 

Did you, by chance, allow any air into the system while bleeding?

 

The issue with the MC is if some corrosion is on the inside of the main barrel it will be below where the normal range of motion is...if you pump the brakes to the bottom the seals could pass that corrosion and get chew up, thus losing the ability to seal. However, even it this happened, its likey that you would get some pressure, just the pedal would eventually sink to the floor. If the pedal is really soft and just goes to the floor you must have air in the system, did you run ouf of fluid somewhere?

If you have air in the system and hav ABD you will need a Hammer to flush it out.

Cheers,

Mike

 

Hi,

When I was bleeding mine - this time last year actually - again with the Motive Power bleeder - I made a point - in between each bleed - to start up the engine and pump the brake pedal a bit.

http://i-fly.freeyellow.com/miscell/...akes/index.htm

I had been told that this helps flush fluid through the ABS/ABD pump and piping - THOROUGHLY ensuring that air is removed.

Note on 'pump' the brake -- just 'tap it down' an inch or so -- DO NOT let it go all the way to the floor or you may incur 'brake master cylinder' problems.

If I were you, I'd RE-bleed the whole system all over again before you start finger pointing at $ parts that may/may not need to be replaced. Absolutely do NOT let the resevoir go below 3/4 during the bleed process. It is an absolute nightmare to get air out of the ABS/ABD system (without the proper tool$.)

Gerry

 

Shawn,

As said, I'd give the system a good bleed again. The easiest and cheapest fix is air in the system. Be sure the rule that out first.