Hello everyone,
I've recently bought a Mityvac MV6840 power bleeder to make my bleeding operation a one man job. This is was my first bleeding on a car and first use of power bleeder.
I followed this video as a reference since they are using the same bleeder: http://www.youtube.com/watch?v=tBNWMWNAXQU#t=85 and I did the following:
1. Removed old fluid from reservoir
2. Topped reservoir to max using new DOT 4 fluid
3. Hooked Mityvac filled with new DOT 4 fluid (2 liters) to reservoir via special adapter
4. Pumped 15 psi of pressure
5. Hunged Mityvac to be at the top of the hood so that it will be the highest point
Once I started to bleed on the caliper I decided to let it go for a while since I really wanted to flush the system. I bought the car recently and I was not sure when the previous owner changed the fluid.
Anyway, after 100 ml bleed from the caliper imagine my surprise when I saw a compressed air going out from the bleed valve
I closed the valve and took I look at the Mityvac. I saw that it was pumping air and fluid into the reservoir. So I guess since my reservoir is really tiny it went dry and compressed air was pushed through the master cylinder.
I wonder, if this a normal thing? I saw a couple of videos of featuring Motive bleeder, and they all say that it is normal to have some air in tube, e.g.: http://www.youtube.com/watch?v=miv3jjN95ok#t=175
How come it works for everyone but I got air in MC?
I've recently bought a Mityvac MV6840 power bleeder to make my bleeding operation a one man job. This is was my first bleeding on a car and first use of power bleeder.
I followed this video as a reference since they are using the same bleeder: http://www.youtube.com/watch?v=tBNWMWNAXQU#t=85 and I did the following:
1. Removed old fluid from reservoir
2. Topped reservoir to max using new DOT 4 fluid
3. Hooked Mityvac filled with new DOT 4 fluid (2 liters) to reservoir via special adapter
4. Pumped 15 psi of pressure
5. Hunged Mityvac to be at the top of the hood so that it will be the highest point
Once I started to bleed on the caliper I decided to let it go for a while since I really wanted to flush the system. I bought the car recently and I was not sure when the previous owner changed the fluid.
Anyway, after 100 ml bleed from the caliper imagine my surprise when I saw a compressed air going out from the bleed valve
I closed the valve and took I look at the Mityvac. I saw that it was pumping air and fluid into the reservoir. So I guess since my reservoir is really tiny it went dry and compressed air was pushed through the master cylinder.
I wonder, if this a normal thing? I saw a couple of videos of featuring Motive bleeder, and they all say that it is normal to have some air in tube, e.g.: http://www.youtube.com/watch?v=miv3jjN95ok#t=175
How come it works for everyone but I got air in MC?