hi i got a 99 jeep cherokee with inline 6 i am replacing the radiator and i really need to fluch the block the radiator is nasty i need a wat to flush the block with out using the radiator and i have the head 0630 is that a good head hope not like the 0331 head any help would be great thanks

 

Remove the t-stat cover and water pump.....stick a garden hose in the t-stat opening in the head....flush, flush, flush.. Re-install a new t-stat and new water pump. How about a new fan clutch and rad cap while u r at it.

 

i will replace the cap and the t stat i just put the water pump in does it got to come back out to do the flush

 

This is how i did on mine.....

Drain coolant (don't even bother with the radiator's drain plug, just remove the lower radiator hose)
Install Prestone Flush n Fill Kit
Remove thermostat
Re-install thermostat housing

Here is the instruction.
In my limited knowledge, removing the thermostat will allow you to flush the whole system otherwise you will have to wait for the thermostat to open up before the engine get flushed (which i find it almost impossible for the engine to get warm up).

When done with the flushing,
Install new thermostat (i went with 185*)

GL.

 

I used the super flush. Do all the rest but b put it in run for 6 hours then change and re fill. Only bad thing about doing in winter is no cold weather protection. But it really cleaned my 2000 4.0. Now it is clean and green and heater is hot.

 

my radiator is so clogged i dont want to flush anymore in the engine block could i just take the t stat cover off and flush without taken water pump back off

 

To do THE BEST FLUSH, yes, both the stat and pump need to be off.....is it the only way to flush....no. Water from the garden hose goes in the head and out the block. Lots of room to change the rad when the stat, pump and fan clutch are out of the way. If u've done the water pump once, then u r a pro at it.....just 4 bolts and a new gasket & rtv.....u'll be amazed at crud that comes out if u flush directly thru the head and out the block with the stat AND pump removed.

 

Replace the radiator!

 

That's the title of the thread. LOL

 

okay i will take the water pump off and flush it that way i am replacing t stat and rad and rad cap water pump is less the a month old and i got the heater core bypassed till i change that do u now what radaitor is better from advance or auto zone

 

lol

 

oh yeah do you know what my oil pressure should be it stays about 50 60 but goes up a little when i get on it and at idle stays 40 to 50

 

Don't forget a new fan clutch.

 

I think u r pressure gauge is fibbin' to ya. Might want to get pressure verified with a accurate mechanical test gauge.

 

what should pressure be around