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Forums > > Best way to burp radiator?
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Old 11-28-2010, 04:48 AM
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Default Best way to burp radiator?

I am gettting ready to swap out my oem radiator with an after market to try and avoid the dreaded radiator-transmission contamanation. What is the best way to get rid of all the air in the system since I do not have the vacuum tool. Anything I should be aware of while doing this job. I have an 07 NISMO 4X4 with 93K miles.

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Old 11-28-2010, 09:47 PM
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replace the upper and lower radiator hoses while your doing the radiator swap.... fyi. around 110,000 my coolant bleeder valve broke where the hose attaches at the fire wall ...(it allows coolant into heater core) .. the plastic had worn out over time and it simply failed.. i replaced that valve and the one to the right that has the long metal tube running behind the engine at firewall. once you install the new radiator, the best way to bleed any air is to start the engine with climate on heater and with reservor cap off... squeeze bottom radiator hose many times .. then top hose.. keep an eye on coolant level... it will rise after a little.. once you feel thermostat open.. squeeze hoses again... i like using a helper to watch the bubbles in reservor..
almost forgot... replace oem reservor cap.... and make sure your new radiator has the flat cap.. not the one with springs... if you install a fancy looking cap with a spring, it will eventually cause the coolant to blow a hose from too much psi
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Old 11-29-2010, 05:31 PM
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Get yourself a Lisle coolant fill funnel (about $20-30). Look it up on youtube to see how it works. Never have to mess with loosening the bleeder screw.
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burp, radiator

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