Question about 1982 Ford F 250
You might have a head gasket going south on you,Here is a test you can do to confirm it,Take your overflow line and stick in a clear bottle with water start the engine an see if you have bubbles in the bottle,if not at start up wait till engine gets up to temp and the thermstat is open, if you have bubble you are getting compression in your coolant system,I hope this helps you And thanks
Posted on Sep 11, 2009
Flush radiator really good with a flush product from prestone or something like that. because the flow of the antifreeze may not be sufficient to cool engine. Make sure your fan is working, Make sure the front of the radiator is clean of debris and bugs so air will flow through.See if that helps.
Posted on Sep 11, 2009
By continues to overheat, do you mean boils water out, or temp gauge goes higher than normal?
Be sure to get all air out of the system, pressure test will help you to know about leaks (duh) as well as if the system has air. Takes many more pumps to get pressure on system with air in it..
So, run the engine, feel upper radiator hose, is it warm? then feel all around on the radiator, feeling for cooler spots. If your vehicle has AC condenser in front of the rad, warm up, then turn off and feel radiator all around...cold spots means plugged radiator, a common problem. you could get it redone, if this is the case, but typically costs LESS to replace with after market rad.
Posted on Sep 11, 2009
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Posted on Jan 02, 2017
SOURCE: ford ranger truck overheating
I have had this happen with my ranger. Changed everything I could to try to fix the over heating. It turned out that I had a small leak in my head gasket and it was allowing exsaust gas to go into the cooling system witch was over pressurizing it. Also the air from the exsaust will heat up much faster than liquid making your thermostat to read hot and will not be able to blow hot air in the cab because there is no liquid going to the heater core. This happened to me when my blet came off and I tryed to make it home. If you had it over heat for a long peirod of time it may have ripped the head gasket.
Posted on Feb 21, 2009
Without knowing all the facts, I can only take a few educated guesses. 1. If you have a pending head gasket failure, it will take a fair bit of driving before the gasket problem will be more pronounced. Usually if a gasket is rotten and just partially blown through, the combustion being released in the cooling system is released is such small amounts that it is a cumulative situation which eventually causes the overheating. This was a common problem on the old Datsun in line 6 cylinder engines. The head gasket would rot back at the # 6 cylinder and slowly blow through. Some would do it so slow that they would demonstrate the same problem you describe. There is a test called a "Block check".
It's a blue fluid in a vial which is designed to be placed at the neck of the radiator. As the engine is running, if there is any sign of carbon monoxide present in the cooling system, the blue fluid will start to change color. The more carbon monoxide present, the more drastic a color change. A slight gasket leak will make the fluid change to a greenish color. Another way can be through a cooling system pressure tester. However, if the leak is super small, the pressure tester will not show the problem unless you allow it to sit and run for quite a while. Another way of testing would be using an exhaust gasses analyzer. You are looking for HC readings coming from the cooling system. However you can be fooled with this test if you don't know what you are doing. This is MYBUNKEY, a seasoned Nissan master tech from the old school hopefully solving you nightmare.
Posted on Mar 24, 2009
make sure theres no air in the system causing vapor lock.
If it's not that i would start looking into head gasket issues.
Posted on Oct 26, 2009
DID YOU BLEED THE COOLING SYSTEM.THIS VECHICLE WHEN YOU REMOVE MOST OF THE COOLANT TO REPLACE WATER PUMP OR RADIATOR AND THERMOSTAT YOU HAVE TO BLEED OUT THE AIR TO GET COOLANT TO CIRCULATE PROPERLY. TO BLEED COOLANT SYSTEM WITH ENGINE COOL LOCATE BLEEDER SCREW AT WATER PUMP BY HOSE OPEN BLEEDER SCREW A LITTLE TO LET SOME AIR OUT WHILE YOU.POUR ANTIFREEZE IN RADIATOR.WHEN RADIATOR COOLANT LEVEL STOP DROPPING CLOSE BLEEDER SCREW AT WATER PUMP BYPASS HOSE.START ENGINE LET IDLE UNTIL GET WARM AND COOLANT DROPS IN RADIATOR ADD MORE COOLANT.WHEN COOLANT START RISING AT RADIATOR.PUT CAP ON RADIATOR LET VECHICLE IDLE A LITTLE AT A TIME.UNTIL THERMOSTAT OPENS THEN YOU CAN WAIT A LITTLE WHILE TAKE A LARGE RAG OVER RADIATOR CAP OPEN A LITTLE YOU WILL HEAR AIR STEAM HISS THROUGH CAP BUT DONT OPEN ALL THE WAY.WHEN HISSING STOP SLOWLY OPEN RADIATOR CAP A LITTLE AT A TIME SO YOU WONT GET SCALDED.YOU CRANK ENGINE UP A LITTLE STOP WAIT A WHILE BEFORE OPEN RADIATOR CAP.KEEP DOING THIS PROCEDURE UNTIL RADIATOR COOLANT STOP DROPPING.WHEN COOLANT STOP DROPPING.BLEEDING COOLANT SYSTEM COMPLETE.IF VECHICLE KEEP OVER HEATING CHECK OIL CRANK CASE LOOK LIKE MILK SHAKE YOU HAVE A BLOWN HEAD GASKET.
Posted on Dec 03, 2010
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