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Old Apr 14, 2014 | 08:48 AM
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Default Bulge in hose

I took my car out of storage late last week. After washing it I checked the fluid levels, started it up and let it run for a bit. After about 10 minutes I shut if off and was inspecting the engine bay when I noticed that the upper radiator hose had a bulge in it where it meets the engine block. I let the car cool down and examined it again and it seem to come down a bit. I squeezed it an compared it to the rest of the hose and it seemed a little soft compared to everywhere else. Needless to say I ordered a new hose but was wondering if it is possible that the thermostat may also have an issue. Is it a wearable item?
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Old Apr 14, 2014 | 09:15 AM
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Originally Posted by STALION
I took my car out of storage late last week. After washing it I checked the fluid levels, started it up and let it run for a bit. After about 10 minutes I shut if off and was inspecting the engine bay when I noticed that the upper radiator hose had a bulge in it where it meets the engine block. I let the car cool down and examined it again and it seem to come down a bit. I squeezed it an compared it to the rest of the hose and it seemed a little soft compared to everywhere else. Needless to say I ordered a new hose but was wondering if it is possible that the thermostat may also have an issue. Is it a wearable item?
Since you are in there replace it.
Some may use a 160 degree
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Old Apr 14, 2014 | 09:17 AM
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Originally Posted by STALION
I took my car out of storage late last week. After washing it I checked the fluid levels, started it up and let it run for a bit. After about 10 minutes I shut if off and was inspecting the engine bay when I noticed that the upper radiator hose had a bulge in it where it meets the engine block. I let the car cool down and examined it again and it seem to come down a bit. I squeezed it an compared it to the rest of the hose and it seemed a little soft compared to everywhere else. Needless to say I ordered a new hose but was wondering if it is possible that the thermostat may also have an issue. Is it a wearable item?
You need a new hose for sure. If your car warms up quickly and doesn't overheat, the thermostat is working properly. They do fail sometimes, so you could replace it as long as you are doing the hoses.
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Old Apr 14, 2014 | 09:42 AM
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Originally Posted by JR-01
You need a new hose for sure. If your car warms up quickly and doesn't overheat, the thermostat is working properly. They do fail sometimes, so you could replace it as long as you are doing the hoses.
but definitely replace at least the hose.
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Old Apr 14, 2014 | 09:56 AM
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Thanks gents. I'll pick up a new thermostat as well. I know these cars are built well but with 110K on the clock I need to keep an eye out for these little anomalies so she can last me another 110
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Old Apr 14, 2014 | 09:56 AM
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I'd get to a doctor ASAP. A bulge in your hose doesn't sound good.
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Old Apr 14, 2014 | 10:23 AM
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Might want to replace the lower hose, too. It's just as old as the upper.
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Old Apr 14, 2014 | 10:55 AM
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Originally Posted by JR-01
Might want to replace the lower hose, too. It's just as old as the upper.
Good point!!
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Old Apr 14, 2014 | 11:12 AM
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I've heard that a bulge lasting over 4 hours, you should seek mechanical attention immediately.
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Old Apr 14, 2014 | 11:29 AM
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Perfect time to buy an LS2 thermostat housing and use a conventional thermostat. Plug-n-play and any future thermostat issues/needs, will be WAY cheaper. GM did away with the all-one-piece thermostat and housing assembly on all LS engines (LS2, LS3, LS7, etc) beginning with the LS2s.
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Old Apr 14, 2014 | 12:49 PM
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Originally Posted by LoneStarFRC
Perfect time to buy an LS2 thermostat housing and use a conventional thermostat. Plug-n-play and any future thermostat issues/needs, will be WAY cheaper. GM did away with the all-one-piece thermostat and housing assembly on all LS engines (LS2, LS3, LS7, etc) beginning with the LS2s.
Thanks, I'll look into this option.

And yes, I'll get my bulge checked out
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Old Apr 14, 2014 | 01:48 PM
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Viagra is not recommended for a coolant additive !
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Old Apr 14, 2014 | 02:32 PM
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When you're down there make sure you blow out the radiator. I blew mine out last weekend and I was surprised how bad it was since it ran so cool. There were leaves, a knapkin, several receipts, cigarette, and a check stub. These cars make good vacuum cleaners.
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Old Apr 14, 2014 | 02:36 PM
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I had a bulge also, but the wife told me to put it away.
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Old Apr 14, 2014 | 02:44 PM
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Originally Posted by ZigZag
I had a bulge also, but the wife told me to put it away.
They seem to do that a lot !!
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Old Apr 14, 2014 | 05:06 PM
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When you don't get a bulge in your hose is when you have a problem.

I'd get with Chip at cca and pick up a set of silicone hoses in your choice of colors
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Old Apr 15, 2014 | 12:29 PM
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Don't forget to get a new o-ring or gasket depending on which thermostat housing you have.
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Old Apr 15, 2014 | 09:50 PM
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Originally Posted by kabluie
Don't forget to get a new o-ring or gasket depending on which thermostat housing you have.
Good point, you don't want to have your bulging hose blow an o-ring. That's a trip to the ER for sure.
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Old Apr 15, 2014 | 10:33 PM
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replace your hoses at 10 years or 100k miles, whichever comes first, just standard maintenance.

that's upper, lower, the U shaped one on the side and the 9/16" straight chunk
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Old Apr 16, 2014 | 06:10 AM
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Honestly at 110k I'd replace all of the hoses.. If not Murphy will strike for sure..
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