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Showing results for tags 'no flow'.
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I’m rebuilding a 1991 trx300 fw. The brake master cylinder was dry/empty. Hoses appear to be clear. Bleed valves are clear. I replaced the master cylinder. I cannot get the fluid to flow out of master cylinder when pumping handle. I am doing everything per the videos I have watched on YouTube. I can get a few bubbles out of the hose at the end of the bleed valves but the fluid level in the reservoir never goes down. I put my thumb over the outflow with the hose off, squeeze handle, and get some back pressure thru the oil seal in the cup and can feel some pressure and suction on my thumb I'm at my wits end and see why brake bleeeding is reserved for the seven levels of hell. Any suggestions?