?? About Bleeding New Calp's + Old lines

[ghostrider17]

Okay - i read a billion threads, ad nauseum....only found one instance of this question recurring:

I just swapped my front Calp's for the 04's.
I properly bled both front lines after - but I didn't bleed the rears.
..and YES - I KNOW how to bleed hydraulic lines properly - please don't ask.

I still have mushy pedal.

I AM going to bleed the rears now - but just wondering if it is typically necessary to bleed ALL FOUR lines/calp's after a caliper/line swap??
RR/LR/FR/FL seems to be the most accepted pattern for bleeding....so I got that.

**Also, do most of you guys with 6spds, get the KEY-OFF dead-pedal issue??
I had to literally RUN my engine to build proper pressure in the system...I find this weird! --must be to do with the power-assist system--?

Curious to hear what the rest of you have done.

Thanks,
gr

[redls1]

I always thought you had to do all 4 wheels when bleeding. But recently when I just tried to do the front calipers I didnt even touch the back and didnt have a problem. I just did the one side I was working on and everything has been fine. Maybe I got lucky.

[!PrjctMax!]

Think about it...if you do only the fronts, then you only need to bleed the fronts. If you were to have to do each caliper after bleeding one, then it'd be an ongoing circle.

That's just the way that I see it at least.

[ghostrider17]

Originally Posted by !PrjctMax!

Think about it...if you do only the fronts, then you only need to bleed the fronts. If you were to have to do each caliper after bleeding one, then it'd be an ongoing circle.
That's just the way that I see it at least.

...well - this is the same logic I used as well...but the pedal is still mushy, and I'm certain I bled them thoroughly....

i was careful to not push any air back in the lines when changing the calp's too....so I figured not bleeding the rears was the cause for the mushy pedal.

I'm curious to hear what others have done.?
keep 'em coming please boys!
gr

[irish44j]

With the car off, pump the pedal a few times and then re-bleed. You need to bleed the ABS systems as well, typically.

Also with new calipers sometimes air gets caught up inside and doesn't come out after the first bleeding. I almost always have to bleed again after driving the car around a bit, and you know how many different caliper swaps I've done (probably switched out the fronts 10+ times)

[ghostrider17]

Thanks Irish.
So, no need to bleed the rears then?

[Delvin]

Originally Posted by ghostrider17

Thanks Irish.
So, no need to bleed the rears then?

You shouldn't need to unless you let the master cylinder go dry and continued to bleed by mistake.

[ghostrider17]

Originally Posted by Delvin

You shouldn't need to unless you let the master cylinder go dry and continued to bleed by mistake.

Nope - always very careful to not do that! --although with the engine running, the power-assist sucked fluid out of the res VERY quickly!! I don't recommend this procedure!!

Thanks for the replies, guys.
gr

[Mizike]

....just another thought, make sure you didnt install the calipers on the wrong side, i.e. left on right and right on left.