My car is a 88 190 2.3-16, i have recently fitted new rear offside brake pipes (flexi and copper) along with a new caliper, ive now come to bleed the brake but seem to be getting no-where, here are my observations:
The fluid in the master cylinder doesnt seem to be going down after maybe 20 mins of bleeding,
When the bleed valve is opened, a small amount of air will come out it,

Is there a special proceedure on this car? or somthing im missing as i spent over an hour last night on the back to no avail,

any help greatfully recieved

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190 2.3-16