ABS Bleeding on 2 different cars

[SweetChuck]

I Managed to borrow T wrench from honda and heres the results

Red NSX :- When turning the bleed screw there was no pressure it just dribbled out . I filled the resovior and ran the motor , took it it for a drive , and locked it up a few times , worked fine , pump runs in 2 bursts then shuts off . Tried to bleed it again and still so pressure in the system . Is this normal or do I have a problem .

Black NSX :- turned the bleed screw and foam and crap almost exploded out up the t wrench . But it turns out the the alb motor is burnt out so could not do any further tests .

I have a spare abs unit that has been sitting for years , turned the bleed screw on that and it also exploded stinking high pressure foam everywhere , What is going on here

I am think of replacing the red car with whole spare abs unit , and putting the working motor in the other black car , and hoping that gets me out of trouble . What a drama any advice here greatly appreciated

 

[Briank]

On the Red NSX I would say the accumulator (that small globe on the bottom) is bad and needs to be replaced. The accumulator has a diaphragm the separates a gas from the fluid and when that diaphragm is broken the whole ball gets filled with the uncompressible brake fluid so when you open the bleeder the pressure goes to zero instantly.

 

[SweetChuck]

On the Red NSX I would say the accumulator (that small globe on the bottom) is bad and needs to be replaced. The accumulator has a diaphragm the separates a gas from the fluid and when that diaphragm is broken the whole ball gets filled with the uncompressible brake fluid so when you open the bleeder the pressure goes to zero instantly.

Thanks , is that hard to change . With the red car if I hit a bump in the road hard the motor pumps , does that make sense ??

Just answered my own question , I took the accumulator and pressure switch off the spare unit , its easy

 

[Briank]

With the accumulater bad any leakage of fluid will drop the pressure and kick in the pump. Hitting a bump may just bounce a valve and let out a little fluid.

 

[OLDMNSX]

Chuck,

Briank has you on the right track. Be sure to flush the fluid until it is clear with the T-Handle, then flush the solenoids. If you can make a couple adapters, like I have pictured in the other ABS thread, to keep the fluid coming from the solenoids from getting back in the pump intake you will save a lot of time and get a better job.

The torque on the accumulator bolts is only 7 lb-ft or 84 lb-in. Now if you are in the southern hemisphere that would be 7 ft-lbs or 84 in-lbs.

Brad

 

[SweetChuck]

Thanks for the help guys , Briank was spot on with the accumulator for the red car. replaced the motor and popped abs fuse in the black car and its also fixed .
The sound of silence is sweet :smile: