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Clearing air pockets

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R

roca

Freshman Member
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I have a 1980 tr-7 and recently changed the temp sending unit, thermostat and radiator. I am assuming that I need to dissolve
air pockets. Is it best to run the car for 15-20 minutes with the radiator cap off to get it to burp?

Thanks,

Rich /ubbthreads/images/graemlins/eek.gif
 
And burp it should if you drained the block while you were at it. Just run it for about 10-15 minutes with the expansion tank cap off, and after the thermostat opens. If memory serves me, it burped pretty good 3-4 times, draining the expansion tank by about 2/3 or more each time. After that put the cap on and let it pressurize, then cool and check again.
 
Thanks for your response. I ran it for about 20 minutes and did not hear any burping . I did notice tiny air bubbles rising to the surface of the Exp tank. I replaced the lower radiator hose prior to refilling since the old one was spongy and covered with oil. Advance Auto parts sold it for $10 about
50% less than other suppliers.

Regards,

Rich /ubbthreads/images/graemlins/driving.gif
 
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