Weeping Hoses

pdX5M · 07-02-2020, 03:15 PM

Recently the coolant hoses at the top of the motor have started to weep a bit. Not enough to affect coolant levels but want to replace them with so thing more robust. Was thinking silicone.

What have you guys replaced these hoses with and is there any special process to replace them or just take the old ones off, put new ones on and add a little coolant/distilled water to the new hoses?

Appreciate it!

Colodano · 07-03-2020, 10:33 AM

When I tried other hose, it did not fit quite well due to the taper on there. I went with new OEM but changed up the hose clamps for worm clamp style.

There is a bleed procedure that is supposed to work, but I have just added coolant to the tank, and let her run.

pdX5M · 07-03-2020, 11:56 AM

Quote:

Originally Posted by Colodano

When I tried other hose, it did not fit quite well due to the taper on there. I went with new OEM but changed up the hose clamps for worm clamp style.

There is a bleed procedure that is supposed to work, but I have just added coolant to the tank, and let her run.

Bummer that better hose didn't fit well. Was hoping someone used some silicone or something since it won't degrade the same as the OEM hoses over time.

Dawgz · 07-03-2020, 11:57 PM

When you so this....change out the plastic T

benton · 07-21-2020, 03:27 PM

Trying to defer replacing the hoses, I picked up some of the nice worm drive clamps from FCP Euro when I was ordering some other stuff, cut off the original clamps, and torqued the new down with some extra oomph. I don't expect it to last forever but it's working now. The hose is crushed quite a bit but 2000 miles later (with some great canyon carving in NC last week) no leaks.

*I don't remember if this was the diameter I used, but FCP has all varieties. I ordered a bunch of each to have on hand: https://www.fcpeuro.com/products/hos...7-5mm-wide-mh5

What happens is that due to thermal damage/heat soak above the turbos, the stress from the clamp on the rubber hoses relaxes over time. The rubber hose softens, thus less pressure on the hard line.

Also, replace the tiny o-rings for the two bleeder screws if you crack the bleeder. They're toast as soon as you turn the screw.

07-02-2020, 03:15 PM	#1
pdX5M First Lieutenant 112 Rep 357 Posts Drives: E70 X5M Join Date: Dec 2018 Location: Portland, OR iTrader: (0) Garage List 2013 BMW X5 M [0.00]	Weeping Hoses Recently the coolant hoses at the top of the motor have started to weep a bit. Not enough to affect coolant levels but want to replace them with so thing more robust. Was thinking silicone. What have you guys replaced these hoses with and is there any special process to replace them or just take the old ones off, put new ones on and add a little coolant/distilled water to the new hoses? Appreciate it! Attached Images __________________ - 2013 X5 M - Silverstone Metallic w/ Black Perforated Complete Merino - All OEM Options - 12.5mm/20mm Spacers - Velos Stage 2 - xHP Stage 3 - AA Catless - Megan Racing Supremo - PTP Blanket - K&N Drop In -
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07-03-2020, 10:33 AM	#2
Colodano First Lieutenant 131 Rep 310 Posts Drives: 2010 X5M Join Date: Oct 2017 Location: Co iTrader: (0)	When I tried other hose, it did not fit quite well due to the taper on there. I went with new OEM but changed up the hose clamps for worm clamp style. There is a bleed procedure that is supposed to work, but I have just added coolant to the tank, and let her run.
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07-03-2020, 11:57 PM	#4
Dawgz 2022 M4 Comp Xdrive 1015 Rep 1,538 Posts Drives: 2022 M4 Comp Xdrive Join Date: Feb 2019 Location: USA iTrader: (0)	When you so this....change out the plastic T
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07-21-2020, 03:27 PM	#5
benton New Member 5 Rep 12 Posts Drives: 10 X5M, 01 M5, 95 993, 02 S6 Join Date: Oct 2018 Location: Ann Arbor, MI iTrader: (0)	Trying to defer replacing the hoses, I picked up some of the nice worm drive clamps from FCP Euro when I was ordering some other stuff, cut off the original clamps, and torqued the new down with some extra oomph. I don't expect it to last forever but it's working now. The hose is crushed quite a bit but 2000 miles later (with some great canyon carving in NC last week) no leaks. I don't remember if this was the diameter I used, but FCP has all varieties. I ordered a bunch of each to have on hand: https://www.fcpeuro.com/products/hos...7-5mm-wide-mh5 What happens is that due to thermal damage/heat soak above the turbos, the stress from the clamp on the rubber hoses relaxes over time. The rubber hose softens, thus less pressure on the hard line. Also, replace the tiny o-rings for the two bleeder screws if you crack the bleeder. They're toast as soon as you turn the screw. Last edited by benton; 07-21-2020 at 03:35 PM..*
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