Prestone Bath

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Apr 2, 2010 | 07:50 PM

cmontel727

Thread Starter

Racer

Joined: May 2004

Posts: 295

Likes: 3

From: Newton NJ

Prestone Bath

Just got done replacing my leaking water pump with an Edelbrock 8815 in my 87 l98. I also cleaned out all the trash in front of the radiator.

Went to refill the system with the engine running and it burped out all the coolant when it got up to aprox 195 degree's. Thinking it was just air purging,I then added more coolant and it pushed it out with a lot of force.

Good news nobody got hurt, just a friggin mess

I have packed the system before and never had this happen.

Not sure why this happened

Could it be my thermostat is stuck closed?

Apr 2, 2010 | 07:59 PM

96z51

Instructor

Joined: Dec 2009

Posts: 111

Likes: 1

most people don't try and run a hot engine with the radiator cap off..

Apr 2, 2010 | 08:12 PM

cmontel727

Thread Starter

Racer

Joined: May 2004

Posts: 295

Likes: 3

From: Newton NJ

My understanding to refill the coolant system is to start the motor and fill the radiator and wait for the thermostat to open. Once open, rev the engine a little and top of the coolant and put the cap on.

Unfortunately for me I did not get to the last step.

Apr 2, 2010 | 08:18 PM

ninetyfivevette

Burning Brakes

Joined: Jan 2002

Posts: 1,228

Likes: 1

From: Dallas Texas

Sounds like an air pocket let loose and founds its way to the exit! I can't even open a container of coolant without dumping half of it on the floor and/ or engine. I feel your pain

Apr 2, 2010 | 08:36 PM

JackDidley

Race Director

Joined: Sep 2003

Posts: 16,833

Likes: 336

From: Database Error Indiana

I got tired of fighting air lock in the system. A single 1/16" hole in the thermostat eliminated that. Stat still functions as it should.

Apr 2, 2010 | 08:57 PM

cmontel727

Thread Starter

Racer

Joined: May 2004

Posts: 295

Likes: 3

From: Newton NJ

Quote:

Originally Posted by JackDidley

I got tired of fighting air lock in the system. A single 1/16" hole in the thermostat eliminated that. Stat still functions as it should.

Quote:

Originally Posted by ninetyfivevette

Sounds like an air pocket let loose and founds its way to the exit! I can't even open a container of coolant without dumping half of it on the floor and/ or engine. I feel your pain

Thanks for the replies, I thought it might have been air. I definitely will give the thermostat a quick drill.