Nissan marching radiator coolant boiling problem needs urgent help

Tiny
FAISALMQ
  • MEMBER
  • 2000 NISSAN MARCH
I have Nissan march 2000 A/T, 1000cc (ENGINE CG 1.0) which had a problem of radiator coolant boiled. Engine Oil & coolant didn’t not mix. Coolant gets back in the reservoir bottle. Temperature gauge showed below hot. Engine started very smoothly even at that hot temperature. I got head Gas kit changed two times but the problem of boiling coolant in the radiator could not resolve. Ultimately, I changed the engine of same specifications along with radiator but same problem of boiling coolant repeated after one year. I am really fed up. Could you please help me out to diagnose the problem relating to some hidden valve in the coolant circulation, ECU or anything else?
Monday, May 7th, 2012 AT 6:59 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Are the cooling fans coming on-if so could be airlock in the system-have it bleed if it continues get it block and pressure tested-
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Monday, May 7th, 2012 AT 9:04 PM
Tiny
FAISALMQ
  • MEMBER
  • 2 POSTS
Would u please tell where to locate the bleeding valve/nipple in Nissan march/micra 1.0 2000 (A/T)? Thanks. I am really convinced with your justified diagnostic reason. Please help me out at the earliest.
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Tuesday, May 8th, 2012 AT 4:52 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
I don't have the cooling bleeding procedures of this vehicle but you can try this:

Allow the engine to cool down to ambient temperature.

Open the radiator cap.

Turn the engine on and turn the heat to max. Turning the heat to max allows the radiator fluid to circulate through the cooling system to ensure that all air pockets are eliminated from the system.

Rev the engine to 2,000 RPMs and hold for approximately 10 to 15 seconds and repeat two to three times. This will allow the radiator fluid to circulate throughout the whole system and ensure that all air pockets exit the radiator.

Gently squeeze the upper radiator hose approximately 6 to 12 inches from the radiator cap. Squeeze about five times. This will bring more air pockets up and out of the radiator and will ensure that the engine does not overheat.
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Tuesday, May 8th, 2012 AT 5:32 PM

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