|On 12 Jul 2003, WrenofAln wrote: | |> We have squishy brakes and noticed that the brake fluid flowed freely |> from one master cylinder reservoir to the other ( Ie: when you topped up |> one reservoir the level in the other one rose as well). When filling the |> new master cylinder to bench prime it we noticed the same thing happen |> but the manual says there are two separate reservoirs that have to be |> filled separately. | |The "reservoirs" are interconnected; the reason why the manual says to |fill both is to eliminate air pockets. | |> There is no change in the brakes - did we get a dud new master cylinder |> or is there another explanation ? | |EIther is possible, because your conclusion about needing a new master |cylinder may have been incorrect if you based it only on the free flow of |fluid within the single reservoir you thought was two reservoirs. | |Squishy brakes? Could be air in the system, could be faulty calipers or |wheel cylinders, could be a faulty booster, could be a faulty hydraulic |control valve. Could be a defective original master cylinder replaced by a |defective "new" one, especially if the "new" one was actually a |remanufactured one.
Virtually all reman master cylinders available in the US are rebuilt by Cardone, and they make a good product. Last I looked our defect rate was lower for Cardone cylinders than for new ones in a very big name brand. I have a Cardone reman master cylinder on my road race car. Works fine, I can late-brake with the best of 'em..