Renault clio, 1994, 130,000 miles, manual.
Took the car for an M.O.T, (annul vehicle test), they said front brakes fine, hand brake fine, but 30% difference on rear brakes with left weaker. I put a new master cylinder in last March because the foot brake sunk to the floor and resolved that problem. At the same I put new cylinders and shoes on the rear. I replaced the flexible hose on that brake (the weaker one) line, I then managed to rig up an air compressor to the line and blast it out to make sure of no blockages. If I turn the engine on and put a light pressure on the brake peddle, I can still manage to turn the left hub by hand but not the right, so I think the problem is still there. Any ideas please?
Sorry do you mean the front or the back? If it's the rear you be talking about, then you have to dial in the shoe to fit proper, Theres a tool for it, forgot what it's called, a good old skinny flat head would work too, and then make sure it's bled proper. If it be the front, you need to rebleed, and if not that then you have a stuck caliper.
Thanks for the reply. I don't believe it is a brake adjustment issue, because the handbrake passed the test, although it is a cable, it indicates that the shoes are engaging the drums correctly.