Bleeding break inconsistentcy
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Bleeding break inconsistentcy
Just put new front calipers on my 2002 f350 4x4. I was bleeding and my wife was pushing the petal. All looked good on my side as far as no more air coming out of the lines but she said on the diver side the petal didn’t move much when I vented the fluid but on the passenger side the petal went to the floor.
Does anyone know what’s going on here? I would assume there is air in the passenger side but none is coming out with the fluid.
i will add the engine wasn’t running because she couldn’t hear me telling her what to do if it was on.
Does anyone know what’s going on here? I would assume there is air in the passenger side but none is coming out with the fluid.
i will add the engine wasn’t running because she couldn’t hear me telling her what to do if it was on.
Fleet Mechanic
Joined: Oct 2017
Posts: 1,704
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From: Southwest Ohio
The engine does not have to be running to bleed the brakes.
Are the brakes functioning properly? Does the pedal grab nice and high or does it grab low?
When you replaced all of the calipers, did you let all the brake fluid run out of the master cylinder? Does the truck have ABS?
-- Dave
Are the brakes functioning properly? Does the pedal grab nice and high or does it grab low?
When you replaced all of the calipers, did you let all the brake fluid run out of the master cylinder? Does the truck have ABS?
-- Dave
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New User
Joined: Jan 2017
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The engine does not have to be running to bleed the brakes.
Are the brakes functioning properly? Does the pedal grab nice and high or does it grab low?
When you replaced all of the calipers, did you let all the brake fluid run out of the master cylinder? Does the truck have ABS?
-- Dave
Are the brakes functioning properly? Does the pedal grab nice and high or does it grab low?
When you replaced all of the calipers, did you let all the brake fluid run out of the master cylinder? Does the truck have ABS?
-- Dave
the master cylinder got low but I don’t think it drained empty, but I couldn’t really see in there. After attaching the calipers and filling the master cylinder I let it just flow until it was a good stream coming out of the vents.
Fleet Owner
Joined: Apr 2008
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The pedal goes to the floor when you open the bleeder screw because there is no way for the system to pressurize. So if no fluid is coming out of the bleeder screw then you might have a clog in that brake line.
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thanks!
Fleet Mechanic
Joined: Nov 2011
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From: Land of Taxes
Glad you got it. You 1 truck 0.
Always tap the caliper with a hammer to dislodge air pockets.
Verify the bleeders are pointed upwards, (as they are directional).
The flexible brake lines should be replaced every 10ish years or when the mileage is up there or when they don't visually inspect well.
They can internally collapse and act as a one-way valve(on caliper piston retraction), Sounds like this was not your problem.
Proper bleeding technique is to start with the caliper farthest from the master. Working towards the closest.
Even though you only replaced the fronts.
The whole system should be flushed every few years or 60-80-100K miles depending on your level of retentiveness.
Always tap the caliper with a hammer to dislodge air pockets.
Verify the bleeders are pointed upwards, (as they are directional).
The flexible brake lines should be replaced every 10ish years or when the mileage is up there or when they don't visually inspect well.
They can internally collapse and act as a one-way valve(on caliper piston retraction), Sounds like this was not your problem.
Proper bleeding technique is to start with the caliper farthest from the master. Working towards the closest.
Even though you only replaced the fronts.
The whole system should be flushed every few years or 60-80-100K miles depending on your level of retentiveness.
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