98 honda civic y7 five speed keeps getting air in the coolant lines I have bypassed the heater core thinking it was that but still seems to b getting air in the lines has no coolant leaks also have burped the radiator for over 45 mins at a time from the cap and from the bleeder screw what could be the issue bad water pump? Water pump doesn't make any noise at all though.

 

"Seems" or "is"? Don't speculate. Pressure test the system.

 

Possible blown head gasket. Do you see bubbles in the coolant in the reservoir and radiator?

 

Only see bubbles in the radiator everytime I bleed the system u can tell it's not working keeps on burping for well over a hour

 

My first thought as well. If the HG is blown, exhaust gas would make its way into the coolant system and constantly bubble like you're saying.

 

yep. rent a block tester to confirm. will tell you if the bubbles are just air or exhaust gases. if exhaust gases, probable blown head gasket.