When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Evo GeneralDiscuss any generalized technical Evo related topics that may not fit into the other forums.
Please do not post tech and rumor threads here.
Sponsored by: RavSpec - JDM Wheels Central
I've never replaced a brake booster, do I need to bleed the brakes after? If so can anyone recommend a decent brake bleeder that only takes one person?
I wouldn't do so immediately if you haven't had the system open. If you are trying to fix something bleeding would be adding another unknown. Check the operation of your brakes first.
If you do then decide to bleed the best bleeder is the brake pedal. Take a clean plastic pop bottle and drill a hole in the lid large enough to accept a hose. Add some brake fluid to the bottle and immerse the end of the hose in the brake fluid. Attach the other end of the hose to the brake bleeder and bleed. Watch that you don't run the master cylinder dry.
Great thanks for the info. I looked at the Motive and then saw the brake bleeder bottles, they looked convenient.
I haven't had a good look yet but will I need to take the brake lines off the master cylinder to get the booster out? I was assuming I did and thought air could be introduced there.
The FSM shows brake lines being disconnected at the master for booster replacement. From what I've read getting that air back out is slightly more work than clutch changing. Are you sure the check valve, which is in the hose, is working?
Heres a clip from the manual noting the system must be drained before removing the MS (who knows, maybe members who have done this have not needed to drain the brake fluid)
The FSM shows brake lines being disconnected at the master for booster replacement. From what I've read getting that air back out is slightly more work than clutch changing. Are you sure the check valve, which is in the hose, is working?
Check valve was OK but I just replaced the hose today anyway with hope that I was wrong. Nope.
I didn't know either until OP asked the question and I looked.
I've never had to touch the master on any Mitsubishi I've owned. I only know of posts on the Tires Wheels and Brakes section where people have seemingly run gallons through the system and still have a soft pedal. Somebody out there has got to know how to get the brakes up and going without all of this fuss.
In the meantime I think it would be worth it to spend another day just checking everything else on the system before breaking out the flare wrenches.
