4.0L freeze plugs - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #1  
Old 11-15-2011
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Icon4 4.0L freeze plugs

I have a 4.0L OHV and I was wondering if were the freeze plugs are at on here. I think I might have a leak out of one of them. Would one be able to crack open and leak on driver side by the head/intake
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Old 11-15-2011
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the OHV is known for leaking coolant around the intake...its a gasket of some sort...dont know exactly what
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Old 11-15-2011
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How hard is it to replace the intake gasket? I work on cars a lot but I am not going to lie I usually work on GM cars
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Old 11-15-2011
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that i dont know
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Old 11-15-2011
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does anyone have a thread on how to replace a intake gasket on a 4.0L OHV?
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Old 11-15-2011
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Its not hard at all but replace everything. I've done a couple of the OHV's. Theres a write up on www.RangerPowerStation.com
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Old 11-15-2011
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I tried the link but it didn't work. thanks thou. i will go to google or something and try it out. it shouldnt be to hard to do.
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  #8  
Old 11-15-2011
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Well does anyone know where the freeze plugs are at on here yet? I wanna check them/ replace them since I am already working on my lil truck
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Old 11-15-2011
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Here. Its a simple fix as long as you have tools. I usually do a coolant flush and change the thermostat.

http://www.therangerstation.com/Maga...11/gaskets.htm
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Old 11-15-2011
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It might be the thermostat housing. I just had to replace mine. 2003 w/ 4.0 SOHC. I do not know if the set up is the same. I had coolant dripping back ontop of the engine block behind the thermostat. My mechanic said the freeze plugs rarely ever go bad on the newer engines. So I would check the thermostat housing. They do crack and the dealership says they replace them all the time because they are made of cheap plastic. Hope this helps.
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Old 11-16-2011
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I thought it could be the thermostat too. I planned on changing it because I want to drive this truck for a while longer. This truck does have 200,000 miles on it so I thought the freeze plugs might have rusted away or cracked since its so old.
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Old 11-16-2011
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I haven't replaced freeze plugs on a 4.0, but have done the job on V8's. They should be on the sides of the block in the motor mount area, you usually have to undo the mount, jack the engine up, and remove the half of the mount that bolts to the block. There isn't much room to work, but sometimes you can drill, put in a sheet metal screw, and pop it out with a craw hammer. Other times you can drive a screwdriver through it if it's rusty enough and pop it out.......not one of my favorite jobs.LOL
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Old 11-16-2011
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Haha yea it doesn't sound like a fun. Thanks!
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Old 11-17-2011
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It can be just as much fun getting the new ones in. Put #2 Permatex around the outside perimeter and tap it in. Use appropriate size socket and hope you have room to tap it in with a hammer.....just flush.
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