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Engine overheat help

Discussion in 'Everything Else (off topic)' started by Well Seasoned, Dec 3, 2021.

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  1. Well Seasoned

    Well Seasoned Administrator

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    Im stumped..... I had success today after i burped the system while idling. First time I was able to get the heat to work
     
    Well Seasoned, Dec 3, 2021
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  2. Creekin

    Creekin

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    What i do for burping air is run with cap off till thermostat opens and ensuring i have heat out the vents, if it heats at idle it should have all the air burped
    Another thing that helps is a funnel that fits tightly on the fill port partially filled
     
    Creekin, Dec 3, 2021
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  3. Well Seasoned

    Well Seasoned Administrator

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    I ran that burp bucket snug in the radiator opening, ran it full throttle a couple times, and it filled up quick.

    I went with a aftermarket thermostat, and shoulve tested it first. Not easy to get to, especially in 17deg weather.

    I "think" i burped it enough..... Was finally either boiling or releasing air.
     
    Well Seasoned, Dec 3, 2021
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  4. Creekin

    Creekin

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    Depending how in depth you want to go, a leak down test would tell you if its a head issue,
    Yank the plugs and pressurize the cylinder with valves closed, if you get bubbles or a geyser out the rad you have definite proof
     
    Creekin, Dec 3, 2021
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  5. Well Seasoned

    Well Seasoned Administrator

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    Sounds complicated......
     
    Well Seasoned, Dec 3, 2021
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  6. Well Seasoned

    Well Seasoned Administrator

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    Then its time to drill holes in the thermostat? :whistle:
     
    Well Seasoned, Dec 3, 2021
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  7. Creekin

    Creekin

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    Most oems use a Stant thermostat, haven't had many issues with them, years ago different story, 2 or 3 to get one that worked properly, THAT SUCKS!!
     
    Creekin, Dec 3, 2021
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  8. Creekin

    Creekin

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    Its not bad, been awhile since I've done plugs on one
     
    Creekin, Dec 3, 2021
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  9. Well Seasoned

    Well Seasoned Administrator

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    I might get an oem tomorrow with a rad cap in St J subaru after work
     
    Well Seasoned, Dec 3, 2021
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  10. Well Seasoned

    Well Seasoned Administrator

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    Ill have to youtube that one.
     
    Well Seasoned, Dec 3, 2021
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  11. Creekin

    Creekin

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    Buddy at the local ford dealership used th open the thermostat by hand and hold it partially open with an aspirin tablet, let him fill it much easier and pill would just dissolve
     
    Creekin, Dec 3, 2021
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  12. Well Seasoned

    Well Seasoned Administrator

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    Ill probably take one too..... To keep my heart valves open!
     
    Well Seasoned, Dec 3, 2021
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  13. Creekin

    Creekin

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    I agree, start with cheap/easy stuff first
    Seen too many young techs go down a diagnostic rabbit hole when easy stuff was overlooked
     
    Creekin, Dec 3, 2021
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  14. Well Seasoned

    Well Seasoned Administrator

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    I shouldve boiled or torched the thermo before i spent all this time putting it in. It was wicked tight with the gasket around it. I could barely keep it in place.
     
    Well Seasoned, Dec 3, 2021
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  15. brenndatomu

    brenndatomu

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    My first thought is that the impellor is gone off the WP shaft...but the intermittent thing kinda blows that...and you keep getting air...its possible that a head gasket is leaking compression into the coolant system...would explain how you keep getting air. Do you have a radiator pressure tester? That would tell the story
     
    brenndatomu, Dec 3, 2021
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  16. Creekin

    Creekin

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    If you do, then often you can see the pressure pulses on the gauge
     
    Creekin, Dec 3, 2021
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  17. Well Seasoned

    Well Seasoned Administrator

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    I don't, but thinking i might get one. Any suggestions?
     
    Well Seasoned, Dec 3, 2021
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  18. Well Seasoned

    Well Seasoned Administrator

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    Well Seasoned, Dec 3, 2021
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  19. Creekin

    Creekin

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    Looks ok, price isn't bad either
     
    Creekin, Dec 3, 2021
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  20. wildwest

    wildwest Moderator

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    wildwest, Dec 3, 2021
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