Ok... so the car is pulling to the left under hard braking....
Changed the clutch and bleed screws recently so assuming there is air in a caliper...... which one would it be that has air trapped1 if the car pulls to the left????
Cheers,
Dave.
Air in caliper??
Re: Air in caliper??
if it pulls to the left the right brake is not working properly
ninja
ninja
2009 Evora - Matt Black Wrap - Sports, tech 2 & Premium Packs - Hard Wired Snooper
2015 Merc SLK - White - wife's car spec with heated and electric everything
Re: Air in caliper??
If you have an S1 . . . and probably a non ABS S2 . . .
The brake circuits are split front and rear not diagonally . . . so both front brakes are on the same hydraulic circuit and both rears are on the same circuit (but a physically different circuit from the front) . . .
So . . . it's not possible for air in one caliper to make the car pull to either side . . . because the circuit pressure (with air in the caliper or not) is the same at both front calipers (because they are connected with a bit of pipe) and both rear calipers (because they are connected with a different bit of pipe) . . . air in a front caliper will simply reduce the efficiency (pressure to) both front calipers . . .
I'd check for a seized piston . . . on the side that the car is NOT pulling towards
ie. if it's pulling right check front and rear left hand pistons . . .
I'd also not rule out a balljoint/mechanical/suspension problem . . . best get it checked properly before something falls off . . . and speaking from personal experience that is bad
Cars with diagonally split circuits WILL pull to one side because of the different efficiencies of the front and rear brakes (usually due to a pressure restrictor in the rear circuit) . . .
IIRC the S1 uses an independant floating piston tandem master cylinder, so you would feel increased pedal travel if there was air in any of the two circuits . . .
Fd
The brake circuits are split front and rear not diagonally . . . so both front brakes are on the same hydraulic circuit and both rears are on the same circuit (but a physically different circuit from the front) . . .
So . . . it's not possible for air in one caliper to make the car pull to either side . . . because the circuit pressure (with air in the caliper or not) is the same at both front calipers (because they are connected with a bit of pipe) and both rear calipers (because they are connected with a different bit of pipe) . . . air in a front caliper will simply reduce the efficiency (pressure to) both front calipers . . .
I'd check for a seized piston . . . on the side that the car is NOT pulling towards
ie. if it's pulling right check front and rear left hand pistons . . .I'd also not rule out a balljoint/mechanical/suspension problem . . . best get it checked properly before something falls off . . . and speaking from personal experience that is bad
Cars with diagonally split circuits WILL pull to one side because of the different efficiencies of the front and rear brakes (usually due to a pressure restrictor in the rear circuit) . . .
IIRC the S1 uses an independant floating piston tandem master cylinder, so you would feel increased pedal travel if there was air in any of the two circuits . . .
Fd