Is it common to have to pump the brakes twice to get a solid pedal?

Kluk Ztopolovky

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I have a 2018 JLUR, no lift w/35" tires, 9k miles. I'm experiencing a somewhat soft brake pedal unless I pump it a second time, then the brakes feel very firm and responsive, as they should. On the second pump, the pedal travel is much less than the first attempt when coming to a stop and the brakes feel very good. I've bled them, thinking there may be some air trapped somewhere, but didn't see any improvement afterwards.

Is this a common thing for the Rubicon Unlimited? Just curious if anyone else has had this problem and if they found a fix. Thanks in advance for any info.
if you ever went through a driving school you would know well that it is not normal , how is the floor? are there any large holes?
 

Fusilli Jerry

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Thanks for sharing. I’ve honestly never even heard of that but appears to be a relatively common issue.
Kind of a bummer, but I didn't buy another FCA product thinking it was going to be Toyota-reliable. I'm just glad I'm still under warranty.

Bummer is that I was going to install my under-hood ARB compressor. But that's on hold until the MC is replaced. Don't want the tech to have to in an even tighter environment, nor do I want to risk the dealership giving me shit about mods and warranty.
 

overcrawler

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Alcon is the way to go. Not cheap, but worth every penny. Super heavy, fully armored rig on 39's with a rooftop tent and it'll still put your face into the dash and lock up all four if you get on them.

It's the route I'm going once I am ready.
 

Fusilli Jerry

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Kind of a bummer, but I didn't buy another FCA product thinking it was going to be Toyota-reliable. I'm just glad I'm still under warranty.

Bummer is that I was going to install my under-hood ARB compressor. But that's on hold until the MC is replaced. Don't want the tech to have to in an even tighter environment, nor do I want to risk the dealership giving me shit about mods and warranty.
UPDATE:
Had my Master Cylinder replaced by dealership, I definitely notice an improvement. I don't have to pump the brake to get it to bite, it's a nice even feel without that feeling of the pedal falling away to the floor as you seen objects in front of you nearing at a speed way faster then you were expecting.

Tech notes said there was a small leak and the fluid was very dark. Not sure WHY, it's only got 17k on it, but it seems to be better now.
 

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