LBZ: Collapsed Hose

[Vrabel]

What besides a coolant cap would cause the upper hose to collapse when cooled off? Replaced and persists.

 

[NC-smokinlmm]

Erg cooler still there?

 

[Vrabel]

No, deleted

 

[ALLY Fox]

Replacement cap bad? Find a short piece of 3/8" rubber hose, place it on the vent hole in the cap and try blowing through it, you should be able to release the check valve easily. If not cap is still bad.

 

[Vrabel]

was thinking the same. came off the Help rack at auto parts store.

 

[Al's max]

I've bought a cap from O'Reilly that still collapsed the hose so went to dealer and still have the same problem. I just quit looking at it

 

[Vrabel]

cant ignore it due to coolant loss

 

[NC-smokinlmm]

Guess I'll be the bad guy...

I've chased this before on an lly and it was HG's...

 

[JoshH]

If you open the cap, does the hose uncollapse?

 

[Vrabel]

yes

 

[JoshH]

Got to be a cap or vent hose problem then.

 

[Vrabel]

Picked up a new cap from dealer, hope it does the trick.

 

[JoshH]

did you check to make sure the vent hose isn't plugged?

 

[Vrabel]

Def not plugged, losing a gal in 10 days.

 

[GeorgiaDieselGTO]

Where u losing it from?

 

[JoshH]

If you're losing coolant, you have another problem.

 

[Vrabel]

Don't see traces anywhere, no drips.
But always adding.

 

[GeorgiaDieselGTO]

Something to check. The plastic fitting that pushlock onto the heater coreabove the downpipe can drip into the exhaust and never hit the ground. I would go rent a pressure tester from an auto parts if you don't have one and see if you can get it to drip out any where

 

[Vrabel]

Gonna go to my buddies shop tonight or tomorrow to pressure test it.

 

[NC-smokinlmm]

It could also be pooling in the valley and evaporating. Ive seen one that was deleted doing this bc the owner uesd a hose clamp instead of a spring clamp on the cooler by pass fitting and it leaking out slowly only when the truck was hot which it then evaporated. We found it by pressurizing the system with dye...