I have an 88 XJ6. Brake pedal goes to floor. I have replaced master cylinder and a faulty abs relay.. Brake pedal still goes to floor. It appears I'm no getting power tot he brake pump. Any advice?

 

There are way better people to reply than me, but- Sounds like a severe lack of brake fluid. Has the system been checked for leaks? Has it been bled lately? and... are you sure the m/c pushrod was reattached.... Hope its an easy fix!

 

Hi iowabobg,

The natural first question is whether you bench-bled the new master cylinder prior to installing it and then properly bled all the air out of the brake lines. If I recall correctly, Jaguar recommends first bleeding the right rear caliper, then the left rear, right front, and left front. If the master cylinder was not bench bled, you may have air trapped in the M/C that will not make its way out of the system by bleeding via the caliper bleed screws.

For diagnostics of your power hydraulic system, see the manual I am attaching below.

Please keep us informed.

Cheers,

Don