This is how Nissan does a Coolant Bleeds. My friend who is a Mechanic for Nissan showed me how they bleed the Coolant System on the Xterra when the sucking noise can be heard from behind the Dash. This noise is caused by air in the Coolant Lines thats passing through the Heater Core.
Time: About 20-45 Minutes, (depending one how much air is in the line).
Materials/Tools:
No-spill Funnel, (the one pictured is borrowed from my friend).
Clamp for Hose
Coolant;
And the Bleeding Begins:
Park Xterra on a Decline where front end is higher than rear.
STEP 1: Place Clamp on Hose;
STEP 2: Release Pressure from Coolant Tank;
STEP 3: Remove Radiator Cap, set-up No-spill Funnel;
STEP 4: Pour about 3+ Cups of Coolant into the Funnel, ( I don't have that much in the Funnel, but that's not the point ).
Turn the heat on full blast and let the Truck get up to Operating Temps and then squeeze the Large Hose going into the Radiator every 30 Seconds or so and watch the little bobbles of air come out. You can also rev the Motor up to 2000rpms for about 15-20 Seconds. Just be careful not to over fill the Funnel with Coolant.
Once you have done this turn the Motor off and you have Coolant still in the Funnel. Let the Truck cool down and all of the Coolant in the Funnel should retreat back into the Radiator. Once the Funnel is empty, take off No-spill Funnel, replace Radiator Cap, make sure Coolant Tank Cap is on tight and release Clamp.
Check in the Morning to see if you hear any sucking noise coming from the Heater Core. If there is noise, Repeat process until noise is gone.
Hope this Helps!
Time: About 20-45 Minutes, (depending one how much air is in the line).
Materials/Tools:
No-spill Funnel, (the one pictured is borrowed from my friend).
Clamp for Hose
Coolant;
And the Bleeding Begins:
Park Xterra on a Decline where front end is higher than rear.
STEP 1: Place Clamp on Hose;
STEP 2: Release Pressure from Coolant Tank;
STEP 3: Remove Radiator Cap, set-up No-spill Funnel;
STEP 4: Pour about 3+ Cups of Coolant into the Funnel, ( I don't have that much in the Funnel, but that's not the point ).
Turn the heat on full blast and let the Truck get up to Operating Temps and then squeeze the Large Hose going into the Radiator every 30 Seconds or so and watch the little bobbles of air come out. You can also rev the Motor up to 2000rpms for about 15-20 Seconds. Just be careful not to over fill the Funnel with Coolant.
Once you have done this turn the Motor off and you have Coolant still in the Funnel. Let the Truck cool down and all of the Coolant in the Funnel should retreat back into the Radiator. Once the Funnel is empty, take off No-spill Funnel, replace Radiator Cap, make sure Coolant Tank Cap is on tight and release Clamp.
Check in the Morning to see if you hear any sucking noise coming from the Heater Core. If there is noise, Repeat process until noise is gone.
Hope this Helps!