Coolant blowing out of overflow tank
09-26-2007, 03:06 PM
#1
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Join Date: Aug 2006
Location: Rotterdam, NY
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Coolant blowing out of overflow tank
I just took my car out for a decent ride and when I pulled in the driveway coolant blew out of the overflow tank.
Most of the driving was around 45 mph or so and in and out of traffic.
I cant seem to figure out why its doing that because it never used to do that before the heads and cam were installed and I put in a 160* thermostat a few weeks ago and everything seemed fine.
On the highway the car runs cool but the temp gauge creeps up while in traffic or idling.
Its got the stock radiator and clutch fan.
Most of the driving was around 45 mph or so and in and out of traffic.
I cant seem to figure out why its doing that because it never used to do that before the heads and cam were installed and I put in a 160* thermostat a few weeks ago and everything seemed fine.
On the highway the car runs cool but the temp gauge creeps up while in traffic or idling.
Its got the stock radiator and clutch fan.
09-26-2007, 03:09 PM
#2
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Join Date: May 2007
Location: Norton, Massachusetts
Posts: 2,166
RE: Coolant blowing out of overflow tank
ORIGINAL: PJB
I just took my car out for a decent ride and when I pulled in the driveway coolant blew out of the overflow tank.
Most of the driving was around 45 mph or so and in and out of traffic.
I cant seem to figure out why its doing that because it never used to do that before the heads and cam were installed and I put in a 160* thermostat a few weeks ago and everything seemed fine.
On the highway the car runs cool but the temp gauge creeps up while in traffic or idling.
Its got the stock radiator and clutch fan.
I just took my car out for a decent ride and when I pulled in the driveway coolant blew out of the overflow tank.
Most of the driving was around 45 mph or so and in and out of traffic.
I cant seem to figure out why its doing that because it never used to do that before the heads and cam were installed and I put in a 160* thermostat a few weeks ago and everything seemed fine.
On the highway the car runs cool but the temp gauge creeps up while in traffic or idling.
Its got the stock radiator and clutch fan.
09-26-2007, 03:17 PM
#3
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Join Date: Aug 2006
Location: Rotterdam, NY
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RE: Coolant blowing out of overflow tank
It was worse with the higher temperature thermostat.
The 160* helped alot- it used to overheat all the time in traffic before putting the 160* in.
The 160* helped alot- it used to overheat all the time in traffic before putting the 160* in.
09-26-2007, 03:19 PM
#4
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Join Date: May 2007
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Posts: 140
RE: Coolant blowing out of overflow tank
ORIGINAL: PJB
I just took my car out for a decent ride and when I pulled in the driveway coolant blew out of the overflow tank.
Most of the driving was around 45 mph or so and in and out of traffic.
I cant seem to figure out why its doing that because it never used to do that before the heads and cam were installed and I put in a 160* thermostat a few weeks ago and everything seemed fine.
On the highway the car runs cool but the temp gauge creeps up while in traffic or idling.
Its got the stock radiator and clutch fan.
I just took my car out for a decent ride and when I pulled in the driveway coolant blew out of the overflow tank.
Most of the driving was around 45 mph or so and in and out of traffic.
I cant seem to figure out why its doing that because it never used to do that before the heads and cam were installed and I put in a 160* thermostat a few weeks ago and everything seemed fine.
On the highway the car runs cool but the temp gauge creeps up while in traffic or idling.
Its got the stock radiator and clutch fan.
You awnsered your own question, it all started after the head and cam install.You either put the head gaskets on wrong or you have a blown head gasket or a cracked head these are the only thingthat wouldcause the coolant to "blow out of the over flow and bubble".
09-26-2007, 03:23 PM
#5
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Join Date: May 2007
Location: Norton, Massachusetts
Posts: 2,166
RE: Coolant blowing out of overflow tank
ORIGINAL: PJB
It was worse with the higher temperature thermostat.
The 160* helped alot- it used to overheat all the time in traffic before putting the 160* in.
It was worse with the higher temperature thermostat.
The 160* helped alot- it used to overheat all the time in traffic before putting the 160* in.
09-26-2007, 03:25 PM
#6
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Join Date: Aug 2006
Location: Rotterdam, NY
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RE: Coolant blowing out of overflow tank
ORIGINAL: Matt Paul
You awnsered your own question, it all started after the head and cam install.You either put the head gaskets on wrong or you have a blown head gasket or a cracked head these are the only thingthat wouldcause the coolant to "blow out of the over flow and bubble".
You awnsered your own question, it all started after the head and cam install.You either put the head gaskets on wrong or you have a blown head gasket or a cracked head these are the only thingthat wouldcause the coolant to "blow out of the over flow and bubble".
The heads are brand new and Im pretty sure the headgaskets were installed right (I didnt change them).
09-26-2007, 03:54 PM
#7
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Join Date: Jul 2006
Location: San Diego, CA
Posts: 6,882
RE: Coolant blowing out of overflow tank
ORIGINAL: PJB
It was worse with the higher temperature thermostat.
The 160* helped alot- it used to overheat all the time in traffic before putting the 160* in.
It was worse with the higher temperature thermostat.
The 160* helped alot- it used to overheat all the time in traffic before putting the 160* in.
09-26-2007, 04:13 PM
#8
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Join Date: Aug 2006
Location: Rotterdam, NY
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RE: Coolant blowing out of overflow tank
ORIGINAL: 86 5.0L
then you have a problem somewhere else, theres no need for a stat lower then 180*
then you have a problem somewhere else, theres no need for a stat lower then 180*
I know its not a leak because theres no puddles and theres plenty of coolant.
I dont think pressure testing will help any.
A few of my friends and other guys with Mustangs said to put in the 160* thermostat so I did, figuring they knew what they were talking about.
One also thinks I might need a better radiator and/or electric fan.
09-26-2007, 04:19 PM
#9
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Location: Howard City, MI
Posts: 5,956
RE: Coolant blowing out of overflow tank
My mustang was doing that, it was from a blown head gasket. It was blowing compression past the gasket into the coolant. Mine progressively got worse to and did it every time I drove towards the end.
09-26-2007, 05:02 PM
#10
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Join Date: Sep 2006
Location: Virginia
Posts: 1,292
RE: Coolant blowing out of overflow tank
The electric fan will help more then most things to helping with the overheating. Unless you get some hugely expensive rad, it will help more then anything. And you can get them for cheap off a taurus in the junk yard,and pick-up some gas mileage as well.