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Greg
Greg, Technician
Category: Car
Satisfied Customers: 1080
Experience:  Automotive diagnostic tech
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have changed the 2 brake pipes from the master cylinder to

Customer Question

have changed the 2 brake pipes from the master cylinder to the load sensing valve and cannot now get a good brake pedal on my 2000 suzuki grand vitara
Submitted: 3 years ago.
Category: Car
Expert:  Ross replied 3 years ago.

techmachine :

Hi, welcome to Just answer, my name is Ross, i will help with your question.

JACUSTOMER-9fhxpsdp- :

awaiting your answer

techmachine :

What type of bleeder did you use? Is this a high pressure bleeder that pushes pressurised fluid into the reservoir

JACUSTOMER-9fhxpsdp- :

yes

techmachine :

Ok, did you depress the pedal at all during or before the bleeding process?

JACUSTOMER-9fhxpsdp- :

no

techmachine :

Ok, have you pumped the pedal and tried to re bleed it after pumping?

JACUSTOMER-9fhxpsdp- :

yes

techmachine :

Ok, sorry for all the questions. Assuming there is no leaks or anything obvious like that, you need to try using a vacuum bleeder as i often have these problems with pressure bleeders, there will be air trapped in their somewhere if the pedal is spongy, getting it out can be difficult, a vac bleeder seems to get the air bubbles to come down and out of where they are stuck rather than letting the fluid flow past them. If there is no luck with this, there is really only one option left which will be the master cylinder seals, when pressure or vac bleeding, the pressure can push the seals backwards, the rubber seal flips over and doesn't seal properly letting a the fluid flow past the seals.

JACUSTOMER-9fhxpsdp- :

in what order should the brakes be bled

techmachine :

Ultimately it makes very little difference providing you push enough fluid through but to do it the quickest way using the least amount of fluid it should be started with the furthest from the master cylinder. It varies depending on the make and model but its usually

1 N/S/R
2 O/S/R
3 N/S/F
4 O/S/F

Double check by looking at the route of the brake pipes, one at the rear will cross from one side to the other, this is the first to be bled.

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