is it possible to get air bubble is the cooling system after replacing the heater core? also would this make my car run hotter? and how do u get them out??
thanx

 

Yes it is possible to get air in the cooling system, and yes, it can make a car run hot. In the little experience I have, they will usually work themselves out with time, but if you're overheating too much then I believe the proper way to bleed the system is to uncap the radiator and start the engine, allowing it to run until hot. This usually makes a mess, but it should fix your problem.

I hope this helps,

Jason

 

i have heard to loosen the hoses and let some coolant/water leak out and this helps to move air.

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87 z28 bowtie aluminum 420small block dry sump crower lt. wt. knife edged crank oliver lt wt rods brodix track 1's super ram intake slp 1 3/4 headers accel dfi art carr 700 r4 3.42 gears ssm sub frame/ladder bars.....other parts on the way ,soon to be finished!! couple more weeks!!!

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how long should i let it run for?? and how hot should i let it get? also what hoses should i disconnect???