cooling system help dont know wat else to do

[jefferson]

hey wats up guys im jeff im a mechanic at menieke out in texas and I recently bought a 2000 ranger 3.0 and honestly the only prob with it is tht it keeps running hot so I thought my method of fixing it would work and yet nothing has changed ,ive changed the water pump,thermostat twice,flushed the system,changed both temp sensors,a new fan and radiator hoses as well heater core
and yet it still runs hot for sum reason I think the pressure isn't getting released it bubbles in the reservoir sometimes spilling out.there are no leaks I did a pressure test does anyone have any idea

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[DBRanger]

Do a head gasket leak test, you can get one at an autozone or such for under 10 bucks

 

[jefferson]

yeah I pressured texted each plug and all norm sorry for leaving tht out

 

[t4thfavor]

Dye pack, run it for a weekend, then check everything for green lights with a UV flashlight. I got the dye bottle and the flashlight for 11$ on Amazon. That, or 1. Thermostat failed closed, 2. fan clutch died, 3. Water pump died. (start with the fan clutch though).

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