my 1988 jeep cherokee is building up pressure and shooting coolant out of the cap on the reserve tank which is also the radiator cap ive replaced the water pump that wasnt working ant the thermostat. anything is helpfull if you have any ideas

 

Have u replaced the radiator cap

 

yea i replaced it and it still does it

 

Mine was leaking fluid outta the cap and I just bent the two tabs on it inward slightly so the cap would screw on tighter

 

Do you have the old closed cooling system with the plastic tank and no actual cap on the radiator? If so check the actual tank for any warpage. I was having similar issues. I bought a new plastic tank and cap and still had issues. I eventually just gave up with my closed coolinnhg system, and went with a new 3 core radiator.

 

If you payed shipping I could send you my old tank. I used it for about 2 month then then swapped out my system. I'll give you the cap and tank for the cost of shipping. Let me know.

 

where did you buy the 3 core radiator i was thinking about doing that anyways because i dont like how its designed anyways

 

radiatorbarn.com

 

Howdy. Is it over-heating?

One supper quick head gasket test is to power/brake it with the cap off and see if it bubbles/geysers. Bubbles will show easier if it's full-full, but since the bottle works as an expansion tank you want to run it with it 1/2 full. Heck, if you've been filling it to the top, that might be your problem.

I'm not saying I think it's your gasket, just, that takes all of 45 seconds!

Just noticed the thread title! Yea, do that little test. Any extra steam, oil look OK?

 

I went to my local. Checker o`rielly and picked it up for $220. I actually think mines a murren? Idk I forget but exact same as the csf. I picked the year from a 93-95 I believe. But they should all fit.

 

after this it started spewing or b4?

 

no it did it before thats why i replaced the thermostat but it didnt solve my problem

 

I heard that you can build up a huge air bubble in the closed cooling system and you have to somehow burp the system. You may have better luck replacing the components to an open system.

 

That's what happen to me?

 

Sorry didn't mean the question mark