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2001 Nissan Sentra air in the system

Tiny
ESTRASZ
  • MEMBER
  • 2001 NISSAN SENTRA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 107,000 MILES
I just replaced the radiator and can't seem to get all of the air out of the system. I tried opening the air relief screw. I also ran the heater and the heat runs hot for a while then turns cool and the engine begins to run hot. I loosened one of the heater core hoses and got some of the air out.
The heat ran hot for a while again but eventually turned cool and then the engine temperature began to rise again. While the heat runs hot the engine temperature stays within the normal range.

I can't seem to get all of the air out to allow the cooling system to work properly
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Sunday, May 23rd, 2010 AT 6:53 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

Back fill the engine with water at the heater hose, ensure that the thermostat has a bleed valve and if not you can drill a small hole in the flange 1/16" is plenty or get a thermostat with a bleed valve, try this.

Mark (mhpautos)
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Monday, May 24th, 2010 AT 3:55 AM

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