After bleeding the brakes I put on the rubber dust caps and noticed something curious. A little bit of fluid and bubbles weeped out of the threads. I noticed that when I pushed my finger over the dust cap, it would happen again. Thinking that perhaps they were not tightened down enough, I snugged them up just a little bit more. I was surprised since they were already quite snug already. I notice that the FSM specifies about 5-6 ft. lbs which seems kind of low. Any comments by anyone?

 

ur bleeder valve might be stripped. make sure the threading is fine on the screw. i was having the same problem, and i had to special order that little valve.

 

Buss95, could you elaborate on your observations. Did you observe the "weeping" after putting on the dust caps, when having somebody pressing the brakes and observing the closed bleeder valves or what? When I put on the dust caps, for some reason the pressure against the residual fluid in the nipple forced fluid/air out of the threads. I could do the same thing by pressing my index finger against the nipple to cause some pressure. I figure if I can push out some fluid this way, so can the brakes from the other direction when the brakes are applied. I really don't understand how mine could be stripped but maybe the seating surface became worn after the multiple "open-close" actions on the bleeder valve to flush/bleed my system.

I read on the speedy valve site that they coat their valves with some sort of sealant. Could my sealant have all worn off? Do the Nissan valves come with a dry sealant on the threads? Did you order new valves from Nissan?

Anyone else experience anything like this?

 

i took my bleeder valve out, and noticed the threading was stripped. when i would try to screw the valve back on, it wouldnt screw in properly. brake fluid would seep out. i bought a replacement at the dealer for 7 bucks, but they didnt have it on hand. i had to wait 2 days for it to arrive. the replacement(valve) screwed in just fine and no more brake fluid would seep out.

-i did notice some sort of coating on the replacement, its gray in color.

hope it helps.

 

Thanks Buss95max. I wonder if I have worn off the coating and that is why is seeped out when I replaced the dust cap.

Daniel, Eric, or others, do you have a comment on this? Do bleeder valves come with a dry sealant on the threads that can wear off with repeated opening and closing?