Constantly having to bleed brakes

[PeterJR]

I have a Lamborghini Spark 215 that is 18 months old and since new, I have needed to bleed the brakes to remove air every week. If I don't do this I have no brakes and can't stop. The dealer doesn't seem to be able to cure this and I wonder if anyone else is having this problem and if so, how have you cured it?

 

[suffolksmallholder]

Loose/cracked hydraulic fitting?
Go through it from reservoir to wheel cylinders.
You may find a loose union/loose reservoir, if air can get in then brake fluid can get out.
Wash area down with brake cleaner then leave pressure on the pedal for a couple of hours. This may yield a result.
I would be very disappointed with a ‘dealer’ if they haven’t been able to fix what sounds like a simple problem!
SS

 

[davidroberts30]

I have a Lamborghini Spark 215 that is 18 months old and since new, I have needed to bleed the brakes to remove air every week. If I don't do this I have no brakes and can't stop. The dealer doesn't seem to be able to cure this and I wonder if anyone else is having this problem and if so, how have you cured it?

I dont know the tractor but if its loosing fluid then its either lost to outside or back into axle
Im guessing the brake oil is from the rear axle not dot4 fluid in a seperate pot
Sounds like the brake piston seals have been pinched in the rear axle
Unlatch the pedals,does both sides loose brake

 

[010101]

If the pedal is hard after bleeding; the circuit is holding pressure and to do this it must all be good.

Defective master cylinders can pull air in on the return stroke.

You have the symptoms.

 

[agrimax]

At 18 months old, is it still under warranty? Whatever it takes, surely the dealer would have to sort it otherwise it's unfit for purpose?

 

[crashbox]

If no visible external leaks, could be internal (i.e. inside the axle)as per @davidroberts30

 

[010101]

It can be frustrating bleeding it all out only for it to take in air every time you have "mended it".
Brake circuit pressure is 1000's of psi.
Ambient air pressure is about 14 psi.

The air is not pushing itself into the circuit.

 

[milton-95]

It needs new seals on the actuators on top of the rear trumpets, bother our deutz tractors have had this done, you'll want to get this done soon because it will only get worse.

Speak to your dealer they'll more than likey have done this before it's a common fault.

 

[milton-95]

Just re read your opening post, didn't see the bit about dealer not solving it.

Surprised they haven't yet because it is common.

 

[essexpete]

At 18 months old, is it still under warranty? Whatever it takes, surely the dealer would have to sort it otherwise it's unfit for purpose?

This Shirley is the approach?

 

[Pistonbroke]

This Shirley is the approach?

Thought the OP's name was Peter