possible head gasket?

[bthomps875]

1989 jeep comanche

4.0 ax-15 5 speed 231j t-case blown clutch very little rot just floor boards 70,000 mi original

paid $900 i get it home everythings fine all the sudden i can hear pinging from the engine not too loud but enough to concern me i rev the engine from the throttle body a little and it sounds kind of whinney and for how much throttle i gave it maybe 2000 rpm , it sounded like i gave it more no clue and thoughts or suggestion on that would be great.

 

next i notice white smoke from the tail pipe and its been running for a half hour if not more check the temp its at 208 go to the antifreeze overflow undo the cap and it starts pooring out not really pressure wise shooting straight up but enough to call it a poor and it smells like a barbeque or like a critter was in the engine and just roasting so i know this is common for a head gasket but i was wondering if there is a pcv valve and if so would this have anything to do with it. so suggestions on that would be great and much appreciated I'm leaving for the army april 11 id really like to figure this out tight on cash can't bring it to a mechanic if i can't fix before i leave I'm probably going to just get rid of it. real sad to say

[Eagle]

next i notice white smoke from the tail pipe and its been running for a half hour if not more check the temp its at 208 go to the antifreeze overflow undo the cap and it starts pooring out not really pressure wise shooting straight up but enough ...

1989? Overflow?

 

You don't have an antifreeze overflow. That plastic bottle on the firewall is NOT an overflow, it's an integral part of the cooling system, it's pressurized, and that cap is your pressure cap. You do NOT remove that cap unless the system is cold. (Unless you enjoy third degree scald injuries, of course.)

 

Get (or borrow) a compression gauge and check the compression on all cylinders.