1G Gunk in brake lines

[CrimsonPaint]

Me and a buddy of mine have been fixing up a 1992 Mitsubishi Eclipse GSX. While trying to bleed the brake lines, we encountered a problem where some of the lines would not bleed the old fluid. We think that we have some buildup of gunk in our brake lines, and are wondering what the best way to clear the lines would be? We have already tried using compressed air, but all then ended up doing was blowing up our reservoir. What is the best course of action here.

 

[dwb]

Maybe take the lines loose at the proportioning valve and also at the calipers, then use compressed air to clear the line. Then take the lines loose from the MC and clear it up to the proportioning valve with compressed air. Make sure each component flows then reassemble and try to bleed again.

 

[steve]

ABS or not?
Denatured alcohol is used to flush the lines. Disconnect each of them and flush and blow them out.