sucked up radiator hoses.

[3G_runner]

I dont know why but both my radiator hoses keep getting sucked flat. I would have to open the radiator cap to expand them.
I just changed the fluids two days ago to full and it still happening ever since I took it to the mechanic for oil leak and they replaced my radiator.
should I open he radiator cap drain some fluid from the plug again and see if that will help with the breathing
I spoke to a sales from kragen he said it might be a bad cap. but the radiator and cap is new.

 

[MillerPKA]

both upper and lower radiator hoses can be had for around ten bucks apiece. go ahead and pick up both with some screw down clamps and do a radiator flush while you're at it. are you checking the hoses when the car is off? chances are they fill out lots more when it is running, either way give them a change

 

[JeremyH]

Make sure that your overflow tank or the lines going to and from it are not blocked or kinked...

 

[3G_runner]

I dont know why but both my radiator hoses keep getting sucked flat. I would have to open the radiator cap to expand them.
I just changed the fluids two days ago to full and it still happening ever since I took it to the mechanic for oil leak and they replaced my radiator.
should I open he radiator cap drain some fluid from the plug again and see if that will help with the breathing
I spoke to a sales from kragen he said it might be a bad cap. but the radiator and cap is new.

I notice when the engine cools it will start to get sucked flat.

 

[notrayray]

I would take off the rad cap and warm up to operating temp to make sure that there isn't a large air cavity in the engine.

 

[BTO]

I notice when the engine cools it will start to get sucked flat.

Yep. That's why you need to heed Jeremy's advice and check the small hose to the overflow tank. It's supposed to suck coolant from the tank back in but if it can't it will create a vacuum and collapse the hoses. It might also be mismatch between the radiator and cap you got or the cap is bad.

Most of today's pressure-type radiator caps contain relief and vacuum valves. The relief valve allows the pressure (positive) in the cooling system to bleed out if it rises above a preset value, such as 16 lbs. When the engine heats up and the temperature rises, the excessive pressure pushes open the relief valve and blows off through the overflow hose. As the engine cools down, the vacuum valve in the cap serves to permit air into the radiator by opening when the internal pressure falls below atmospheric pressure (negative) after the engine is shut off.