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Overheating after visit to the mechanic

Tiny
ROMADRIAN COLORADO
  • MEMBER
  • 2005 SUBARU IMPREZA
  • 2.5L
  • 4 CYL
  • AWD
  • AUTOMATIC
  • 154,000 MILES
Hello,

Since my last visit at the mechanic when they changed all of the fluids and spark plugs I have had intermittent heating problems. Approximately 2,000 miles after that service I checked my engine oil level and I had to add 1.8 liters! Since then I have replaced the coolant, checked the functionality of the thermostat and I am about to do a block test. I suspect I might have a small crack around the filler neck of the radiator. I kept seeing small drops there. I just replace the cap the hose that goes to the expansion tank and the upper radiator hose to be sure that those are not the problem. Any suggestions?
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Monday, December 12th, 2016 AT 8:09 PM

2 Replies

Tiny
JOHNNY G.JR
  • MECHANIC
  • 320 POSTS
Go to auto parts store and rent or borrow a radiator pressure tester, Do this after engine has cooled down.
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Monday, December 12th, 2016 AT 8:13 PM
Tiny
STEVE W.
  • MECHANIC
  • 13,452 POSTS
In addition and especially if this engine did get hot, rent a combustion gas tester along with the pressure tester. Subarus do not like getting hot, they tend to blow head gaskets. Not really a difficult repair but it can be complicated.
Eric O has a five part series on replacement if you find that you have a gasket problem.
https://www.youtube.com/watch?v=_Xe6pvCk7JM
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Tuesday, December 13th, 2016 AT 8:49 AM

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