Good day Scotty,
I have a 2003 Chevy Venture. The master cylinder went bad. I followed your video on how to bleed a master cylinder. After doing your procedure several times I went back to the master cylinder and I saw bubbles rising up from the bottom of the reservoir. Big bubbles! What am I doing wrong or is there a different problem I need to address. Or do I just need to keep doing what I was until I don’t see any more bubbles?
Did you bench-bleed the master cylinder? Did you use a bidirectional scan tool to bleed the ABS?
No, don’t have said tool and from Scotty’s video he didn’t say anything about bench bleeding.
@tazetters - Bench bleeding is a necessity when replacing a master cylinder. (The tool needed can be cobbled together from scrap brake lines or purchased inexpensively.) Also, most ABS-equipped vehicles require a bidirectional scan tool to bleed the system.
So I shouldn’t have attempted
It by just giving by his videos?
@tazetters - I did not see the video in question but from what you're saying apparently there were some missing details. (In fact I recently replaced a master cylinder and the first thing I did was bench-bleed the new part, that's just standard procedure that I do automatically.)
These details have been discussed on the forum here and could have been found with the search function. A general internet search would have likely also turned up the information.
It's not too late, you could elect to bench-bleed the master cylinder. Depending on the way it's plumbed in it may not even have to be removed.
Oh it’s a bear to take out! But I’m really good at now! LOL. Thank you for the information. The tool you mention would I find it on a google search?
It's just a couple of short brake lines threaded into the master cylinder and bent over so fluid goes back into the reservoir. If you can get at the lines in situ you may not need to remove the part. An internet search would quickly bring up information, such as:
https://www.youtube.com/watch?v=-kbDLUHZFqU