defender dinky Posted May 7, 2009 Share Posted May 7, 2009 hi all, took dinky for mot today passed flying colours,garage about 20 minutes away after about 15 minutes brakes went spungey, had to wait awhile for mot brakes went solid again, on the way back home same happened again about 15 minutes spungey waited for awhile and they were solid, any ideas seems a bit strange cheer's defender dinky Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted May 7, 2009 Share Posted May 7, 2009 Change the fluid if it's unknown, see if it helps. Quote Link to comment Share on other sites More sharing options...
western Posted May 7, 2009 Share Posted May 7, 2009 check the vacuum pump is working, pull the hose of the servo & with engine running stick your finger on end of hose it should give a strong suck, if not might need a new vacuum pump. adjust the rear brakes too if they are drums. Quote Link to comment Share on other sites More sharing options...
markyboy Posted May 7, 2009 Share Posted May 7, 2009 hi all, took dinky for mot today passed flying colours,garage about 20 minutes away after about 15 minutes brakes went spungey, had to wait awhile for mot brakes went solid again, on the way back home same happened again about 15 minutes spungey waited for awhile and they were solid, any ideas seems a bit strange cheer's defender dinky I'd go for the fluid too, I've experienced the same thing with one of my cars in the past. Did the problem occur after a period of hard braking? If so it points to water in the fluid boiling up. Mark. Quote Link to comment Share on other sites More sharing options...
defender dinky Posted May 7, 2009 Author Share Posted May 7, 2009 check the vacuum pump is working, pull the hose of the servo & with engine running stick your finger on end of hose it should give a strong suck, if not might need a new vacuum pump. adjust the rear brakes too if they are drums. hi, will try vacuum to morrow cheer's defender dinky Quote Link to comment Share on other sites More sharing options...
defender dinky Posted May 8, 2009 Author Share Posted May 8, 2009 I'd go for the fluid too, I've experienced the same thing with one of my cars in the past. Did the problem occur after a period of hard braking? If so it points to water in the fluid boiling up. Mark. hi mark, just before MOT i put new brake pads in as i have disc's on the back,garage said they were binding a bit would this cause caliper to get hot and boil fluid, when at the garage a few minutes later the rear hubs were still abit warm i have stopped the binding now , but have'nt had chance to take it out yet cheer's defender dinky Quote Link to comment Share on other sites More sharing options...
defender dinky Posted May 8, 2009 Author Share Posted May 8, 2009 check the vacuum pump is working, pull the hose of the servo & with engine running stick your finger on end of hose it should give a strong suck, if not might need a new vacuum pump. adjust the rear brakes too if they are drums. hi, vacuum ok plenty of suction cheer's Quote Link to comment Share on other sites More sharing options...
western Posted May 8, 2009 Share Posted May 8, 2009 hi, vacuum ok plenty of suction cheer's go for a fluid change as suggested above. Quote Link to comment Share on other sites More sharing options...
markyboy Posted May 8, 2009 Share Posted May 8, 2009 hi mark, just before MOT i put new brake pads in as i have disc's on the back,garage said they were binding a bit would this cause caliper to get hot and boil fluid, when at the garage a few minutes later the rear hubs were still abit warm i have stopped the binding now , but have'nt had chance to take it out yet cheer's defender dinky Dinky, The binding brakes could certainly cause it although it would depend a bit on how much they were binding. Brake fluid should be changed as a matter of course every couple of years, though most people don't bother, . Brake fluid is hydroscopic (spelling?), in other words it absorbs water and, over a period of time, this leads to deterioration of the fluid, hence the need to change it regularly. As Western says, it's probably worth changing anyway. Keep us posted on how you go on. HTH. Mark. Quote Link to comment Share on other sites More sharing options...
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