degaus bottle cap question?
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Senior User
Joined: Jan 2008
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degaus bottle cap question?
hey guys i got my truck back from the stealer today for a new turbo center section, when i got home, 20min drive in 34 deg weather, popped the hood checked all various hoses screws and what not, well the degas cap was 
slightly left loose. it was 3/4 threaded on but not all the way down not clicking when it it fully on properly. did this cause some/any possible damage to my engine possibly? my needle moved in the normal fashion until mid range, and stayed there as it always does fan never kicked on at all. will this cause a issue in the future with the cooling system or engine or am i ok? i thought the system needs to be 16psi pressurized to work properly to function and not having a vent like this? please help i asked the service mgr. he said it was non-issue but he is a new guy can i trust his answer?
slightly left loose. it was 3/4 threaded on but not all the way down not clicking when it it fully on properly. did this cause some/any possible damage to my engine possibly? my needle moved in the normal fashion until mid range, and stayed there as it always does fan never kicked on at all. will this cause a issue in the future with the cooling system or engine or am i ok? i thought the system needs to be 16psi pressurized to work properly to function and not having a vent like this? please help i asked the service mgr. he said it was non-issue but he is a new guy can i trust his answer?
Lead Driver
Joined: Sep 2007
Posts: 8,180
Likes: 669
From: Scio, OR
hey guys i got my truck back from the stealer today for a new turbo center section, when i got home, 20min drive in 34 deg weather, popped the hood checked all various hoses screws and what not, well the degas cap was slightly left loose. it was 3/4 threaded on but not all the way down not clicking when it it fully on properly. did this cause some/any possible damage to my engine possibly? my needle moved in the normal fashion until mid range, and stayed there as it always does fan never kicked on at all. will this cause a issue in the future with the cooling system or engine or am i ok? i thought the system needs to be 16psi pressurized to work properly to function and not having a vent like this? please help i asked the service mgr. he said it was non-issue but he is a new guy can i trust his answer?
slightly left loose. it was 3/4 threaded on but not all the way down not clicking when it it fully on properly. did this cause some/any possible damage to my engine possibly? my needle moved in the normal fashion until mid range, and stayed there as it always does fan never kicked on at all. will this cause a issue in the future with the cooling system or engine or am i ok? i thought the system needs to be 16psi pressurized to work properly to function and not having a vent like this? please help i asked the service mgr. he said it was non-issue but he is a new guy can i trust his answer?
Lead Driver
Joined: Dec 2006
Posts: 7,092
Likes: 145
From: San Diego, CA
As long as you still had coolant in your degas bottle you're fine.
If the bottle's empty then you run the risk of uncovering some of the tube runs in the radiator which could develop some scale and reduce the heat transfer ability.
If the bottle's empty then you run the risk of uncovering some of the tube runs in the radiator which could develop some scale and reduce the heat transfer ability.
Senior User
Joined: Jul 2005
Posts: 449
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6SLPSD, not trying to be preachy, I am no mechanic, I do oil and fuel filters on mine, that is about it. My policy is that I do a mini-inspection after any service, no matter who is doing the work. If I get tires rotated and balanced, boom, check to make sure work was done (chalk mark rears, for example) and check that valve stem caps are on, check tire pressure also. We used to pick up fire trucks from our maintenance shop, drive all the way back to the station, and then find stuff wrong...not good. So that is where it started for me, we always did an onsite inspection, it pisses people off, but saves time and headaches later.
My 2 cents...
My 2 cents...
Elder User
Joined: Aug 2007
Posts: 516
Likes: 8
From: Milwaukie, Oregon
6SLPSD, not trying to be preachy, I am no mechanic, I do oil and fuel filters on mine, that is about it. My policy is that I do a mini-inspection after any service, no matter who is doing the work. If I get tires rotated and balanced, boom, check to make sure work was done (chalk mark rears, for example) and check that valve stem caps are on, check tire pressure also. We used to pick up fire trucks from our maintenance shop, drive all the way back to the station, and then find stuff wrong...not good. So that is where it started for me, we always did an onsite inspection, it pisses people off, but saves time and headaches later.
My 2 cents...
My 2 cents...
