bad head 2.8?

[stegomon]

i have a 4.0 rad in my 84 ranger with a 2.8....over heats....builds a lot of pressure...enough to blow off the rad hose, with the cap off it pushes out a lot of water and LOTS of steam. i am thinking it is the blown head

 

[dangerranger83]

Sounds like pressure from the cylinder is making its way into the cooling system our from another source. Hopefully your t stat is working properly too.

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[John Smith]

just isolate which head it is..

i have a 4.0 rad in my 84 ranger with a 2.8....over heats....builds a lot of pressure...enough to blow off the rad hose, with the cap off it pushes out a lot of water and LOTS of steam. i am thinking it is the blown head

and start the process...maybe just a gasket..but you'll find out soon...

just don't run it much..and get the water into the basement..

 

[dangerranger83]

Or something as simple as the water pump is going out. The fins could be corroded down to almost nothing and not moving water through the block as they should be.

 

[okietheranger]

If ur heater works then ur water pump is working. Sounds like head gasket. But u could have a cracked head also if it got hot enough. U will know when u tear it apart. Also if ur timming is way off it could get hot as well.