miatamike203

I got about 2000miles on my new motor and the other day it started to shoot coolant from the radiator to the res then out the res. I replaced the radiator cap and i ran the car with out the thermostat to see if the new one that was in there was bad but it still dose the same thing. what do i do to fix this????

JasonC SBB

You need a new rad cap not a t-stat.

miatamike203

I replaced it last night and i took the thermostat out and it still dose the same thing. the cap is a 16psi cap.

pdexta

iTrader: (17)

Hopefully it's not the same issue, but certainly sounds like the same thing mine was doing: https://www.miataturbo.net/forum/t39992/

Blown headgasket between around cylinders 2 and 3 was blowing air into my cooling system and forcing all the water out. As soon as I'd crank the car it would just start pissing water into the overflow tank. GL.

miatamike203

Thats sorta what mine is doing but it seams to only do it once its warmed up. Im hoping if i RE-TQ the head studs it will go away.

Stephanie Turner

Could be a blockage in the radiator. Mine had one and would regurgitate coolant out the reservoir. Do you have a coolant re-route on the car?
Stephanie

miatamike203

No i dont but i do have a full aluminum one that's 2 times as wide as the old one. It has about 3000miles on it.

sixshooter

iTrader: (12)

Time for a compression test...

I'm in for the HG.

miata2fast

iTrader: (2)

+2 on head gasket. If it is blown, it is too late. Retorquing will do you no good. Is there steam coming from the tailpipe?

However, it may have rust in the bottom of the radiator. It happened to me. Is the fluid rusty colored?

To fix the problem, I ran the waterpump (electiric on my car) with the drain open, and a water hose forcing into the radiator. The preasure from the hose pushed all of the garbage that was in my radiator core out of the drain hole. Try it with the car off, and then try it with the car running (engine cool) with the thermostat out. Then with the car not running again.

Careful about cold water in hot engine. If you pump cold water into a cold engine when it is running, you will not have a problem pumping water into it following engine shut off. It could be a problem if it sat and the block started to heat the water. Continue until the water is clear.

This happened to me last week, and it is fresh in my mind. My car ran cool ever since.

railz

iTrader: (33)

he says its a new motor and new Radiator.

What head bolts did you use? old OEM, new OEM or ARP?
what did you torque bolts to?

Doppelgänger

iTrader: (12)

You'll be fine if you add some Liquid Head Gasket into your oil.
MT member Mouglie can attest to this.

miatamike203

i did it and i got 170psi from 1 to 4.
I RE-TQ it and it stopped also i have an aluminum radiator nor rust here.

ARP 70ftlb but i went to 75 today and now the problem is fixed
RE-TQ fixed it went to 75fylb of TQ and no more problem

miata2fast

iTrader: (2)

Well I'll be damned. That suprises me.

Keep us posted on how long it lasts. I thought that once air and water passes under a head gasket, it would be long gone.

miatamike203

well time to pull the head and get a new HG, i was in the lot at work warming it up and it started to over heat so i said wtf and now will pull the head tomorrow.

NA6C-Guy

iTrader: (1)

Once they go they are gone. Hot gases will make a small path in the gasket and even tightening it will not close it up. Fel-Pro gaskets are cheap though, any local part store should have one for under $50.

miatamike203

yaa i wish the felpro gasket was that cheap here it was 70 even with my whole sale discount .