bishop1950

I am afraid I have a. Coolant seal failure,last night I was on my way home and heater stopped working ,I pulled into m garage and it was showing hot . I checked water bottle and it was low.I added antifreez and water more than it should be .I checked underneath and saw no leaks. I started it back up (started fine) I need to fuel her up I headed out to station but temp gauge went over Half way .I turned around and came back home.I went less than a mile ,I pulled back into my garage and saw where cool at had dumped out. AT this point it was wtf.... where am I losing coolant from .??
I poured water into water bottle and I heard a loud pop (oh %&$*) coolant was leaking from a new lower radiator nose . I fixed that and refilled with coolant . She was hard to start . When she started lotfs of white smoke from exhaust .over flow was spraying water bubbles coming up in water bottle .spewing coolant out overflow. No heat in cab ...I cut her off ate dinner and went back out, hard to start once started pressure cap is popping off ? White smoke from dxhaust---
What is involved in a coolant seal repair? Stuck thermo stat??
Thoughts comments prayers please
I,all pull plugs after work tomorrow d see if they are wet ?

9krpmrx8

iTrader: (46)

You need to pressure test the cooling system. The stock gauge doesn't even move until 240F which is at the limit of what the engine can take. Replacing the seals requires an engine rebuild. You can also take an oil sample and have it tested for the presence of coolant or do a coolant hydrocarbon test.

Williard

iTrader: (18)

OP,

In all honesty it's not exactly easy to follow your chain of events.

From everything that i have gathered, you were losing coolant from somewhere and after your temp needle had jumped to far(many cases it's overheated before the needle moves).

You found the coolant leak was a lower Rad hose and have since fixed the issue. Well first off you need to bleed your coolant system of air and fill it properly. While your at it, i would pull the plugs and disconnect the ESS. Give it a few turns (crank the car) and see if coolant spews out of the plug holes, if so your seal has indeed failed.

If you have the ability you can pressure test the cooling system.

Even the slightest overheat can warp housings. Ask me how i know...

A coolant seal "repair" means your tearing the engine down.

Report back with your results.

Travis

bishop1950

I'll do a system pressure test tomorrow and pull plugs .I'll report back what I find. Thanks Travis ,9k

TeamRX8

iTrader: (25)

Assuming that is the problem the only repair is to rebuild or replace the engine

As far as the OE gauge is concerned, on a dyno I've hit the high end of the needle range and not blown the coolant seals. So don't always take some of the forum folklore as concrete fact ...

bishop1950

I pressure tested system to 15 lbs I thiink Mazda says 17 lb max ...it would not hold pressure . Lost about a lb per min . ?????? I have to take pressure test equipment back ,Ill pul plugs after I get back

logalinipoo

If theres no visable leaks its time for a rebuild.

9krpmrx8

iTrader: (46)

Yeah it doesn't take much to kill the coolant seals. Some people just get lucky and overheat without doing permanent damage. I saw one that melted the OMP lines it overheated do bad and the owner said that it "barely overheated".

bishop1950

i did it by doing somthng very stupid ! The loud pop , Like a 22 shot going off when I put cold water into a hot engine . SO I have the stupid sign !! LOL Or God is keeping me out of a bad wreck !!
Time to look for Mazda reman short block !

G_ man

iTrader: (2)

Great info on the video,thanks for posting it 9k

9krpmrx8

iTrader: (46)

That guy can be annoying to listen to but he has some good videos.

bishop1950

update I pulled the leading plugs. . Turned her over water shot out of both rotors . I drained coolant out , put a couple onces of oil in each rotor ,turned her over to displace water. Its going be a few days before I can pull motor.

G_ man

iTrader: (2)

Well that sucks and hope the rebuild goes quickly for you.
If you can post some pics while your doing rebuild.
Good Luck

9krpmrx8

iTrader: (46)

I would suggest contacting Rob @ Pineapple racing, he built my engine and it was a great process and the engine has held up well even with the turbo. Whether you use him or not you may want to consider using his heavy duty coolant seals in your rebuild.