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Bleeding brakes with engine on or off

Discussion in 'The Garage' started by franco802, Jan 13, 2007.

  1. franco802

    franco802 1/2 ton status

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    Are you guys bleeding the brakes with your engine on or off. On vehicles with power brakes I have always bled them with engine on.
     
  2. hunterguy86

    hunterguy86 1/2 ton status

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    I've always bled them with the engine off becaue thats how I was taught I guess.

    I wonder if it really does make a diffrence.

    HMMM........
     
  3. koldsimer

    koldsimer 1/2 ton status GMOTM Winner

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    I dont think it matters but i've always done it with the engine off.
     
  4. muddybuddy

    muddybuddy 3/4 ton status

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    i always do it off
     
  5. big dan

    big dan 1/2 ton status Premium Member

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    I always do it with the engine off. takes too much to feed the motor just to bleed the brakes, unless it is better to do it with the engine on. safety first:wink1: but Ive never heard that the engine needs to be on to do it properly.
     
  6. Elevator Man

    Elevator Man 1/2 ton status

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    I do it with the engine running. Which part of Ar are you in Big Dan?
     
  7. AZ79K5Project

    AZ79K5Project 1/2 ton status

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  8. big dan

    big dan 1/2 ton status Premium Member

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    I live in Alma. If your not familiar with the area its about 20 miles to the east of Fort Smith. What about you?
     
  9. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    I bleed with the engine off then once i think i have all the air out i bleed a final time with the engine running.
     
  10. blomtech

    blomtech Newbie

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    bleeding brakes

    AZ can you repost the pictures of your pressure bleeder? The link on here doesn't work. I am having problems bleeding my brakes. It looks as if I'm getting all the air out and then I start my blazer and i have no pedal pressure. any help would be greatly appreciated.
    -Blomtech
     
  11. beater_k20

    beater_k20 Banned

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  12. MattK

    MattK 1/2 ton status

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    engine off. gas is expensive and my exhaust burns the eyes:haha::haha:
     
  13. Elevator Man

    Elevator Man 1/2 ton status

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    Big dan I live in Bigelow If you ever get out this way let me know. Bigelow is about 15 miles outside of Conway.
     
  14. beater_k20

    beater_k20 Banned

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    so lean it out. it will run better, and you'll use less gas. :deal:
     
  15. JEBSR

    JEBSR 1/2 ton status

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    Yea, it makes no differance as the power assist sysems do just that (assist you if pushing the peddle with less effort). It has nothing to do with the actual hydraulic portion of the brakes. Therefor it doesn't matter.
     
  16. AZ79K5Project

    AZ79K5Project 1/2 ton status

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    [FONT=&quot]
    The Whole Post. PM me and I will email the pics if you have problems seeing them. Post 16 has pics.

    Another post regarding brake issues Bad MC

    Brake Issue 2.

    I had what you described last month after swapping axles. It was a bad MC. Bought a new MC, bench bled it, bolted up and 10 minutes later with pressure bleeder, all was good.

    The MC was fine when I started an axle swap, but probably toasted it during the bleeding. (old and brittle o-rings inside)[/FONT]
     
  17. franco802

    franco802 1/2 ton status

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    Well, I purchased a "Mighty Vac" from harbor freight and it worked awsome!! Brakes are much better and stop pretty good. Now that the extended lines are on, I gotta find a place to see how much this bitch flexes:) Oh yeah, also want to see if these new 35's will rub with my 4" procomp lift![​IMG]
     
  18. ntsqd

    ntsqd 1/2 ton status

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    Looks to me like you've got a built-in ramp right there next to the truck. :D
     
  19. franco802

    franco802 1/2 ton status

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    :haha: Your so right, but i already thought about that one. The bottom portion of that ramp has fallen apart, i think my neighbor would be pissed if the whole wall came down:D
     

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