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Building up pressure and overheating

Tiny
DEFD0PE
  • MEMBER
  • 1996 ACURA CL
  • V6
  • 2WD
  • AUTOMATIC
  • 195,000 MILES
I have the car listed above that keeps overheating. I've already put in a new radiator and check the thermostat. Also it keeps building up a lot of pressure like a lot of pressure to where the radiator hoses are swinging from the bubbling. I did bleed the air out of the line. I just don't understand what's going on. Any help would be hugely appreciate it.
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Sunday, August 2nd, 2020 AT 7:09 PM

4 Replies

Tiny
DEFD0PE
  • MEMBER
  • 3 POSTS
Update: asked the question while sitting on the side of the road waiting for the car to cool down. When I just checked it the radiator hose was flat because of all the suction. So definitely thinking wrong radiator cap but that still doesn't solve my problem because I just put that radiator cap on there because the last one wasn't working. But it wasn't doing that either it just was filling the overflow reservoir until it was spraying out. Please help.
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Sunday, August 2nd, 2020 AT 7:15 PM
Tiny
STEVE W.
  • MECHANIC
  • 13,414 POSTS
The only place pressure like that would be from is a bad head gasket. In normal operation the system runs under about 12-15 psi. and shouldn't overheat. I would start by doing a pressure test and a combustion gas test.
https://www.2carpros.com/articles/head-gasket-blown-test
You can usually get the test equipment at many parts stores as loaner or rental tools.
From there you would need to determine which way to proceed.
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Sunday, August 2nd, 2020 AT 8:06 PM
Tiny
DEFD0PE
  • MEMBER
  • 3 POSTS
I thought head gasket too, but didn't see any coolant in the oil. I will do that that though. Thank you
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Sunday, August 2nd, 2020 AT 10:20 PM
Tiny
STEVE W.
  • MECHANIC
  • 13,414 POSTS
It depends on where it fails as to whether it goes into the oil. It's possible as well that it's a crack in the head or block. They would all show up the same way. Testing gives you a place to start.
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Monday, August 3rd, 2020 AT 1:54 AM

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