Check the heater hoses for leaks. Mine turn brittle, split and leak at the engine attachment points.

Regards

Jean Marc Chartier

 

DTC :
The "****" does work, but there are several caveat's that need to be addressed. If you have ever replaced the head gaskets on a 4.6 you will be forever glad that it really does work. I don't have enough time currently, but I may have time to post my notes.
Seriously don't work that engine with bad gaskets.

 

My truck was doing almost the same thing as yours---air gurgling, high coolant pressure, my temp ga. was also slightly higher than before. I had both head gaskets replaced ($1,853) the garage did an exellent job, they said they flushed the cooling system after repairs. I ran it 100 mi then I flushed it again 4 or 5 times myself just to be sure all the acid from combustion gases was flushed out then new put in antifreeze. Make sure you get the heads pressure tested and checked for warp.

 

A couple thoughts... Crawl under the truck and crack the oil drain until it drips. If you have a bad head gaskets leak you will have coolant in the oil, since oil is lighter the coolant/water drops to the bottom of the pan and will come out first. If you see water don't drive it, the oil pump pickup is near the bottom of the pan and bearings don't like water for very long....

The gurgling under the dash and coolant smell can be a plugged drain on the a/c system. You know how vehicles drip when you run the a/c? If that drain is plugged the water backs up and will usually run down inside on the carpet also. That problem wouldn't explain the radiator cap, but its of course possible that you have two things going on....

 

Ok, we checked the coolant for CO's and found none. We hooked up his computer/scanner thing and drove around for half an hour and everything is running at temps it should be. My temp gauge has never moved from where it's supposed to be. From what we can tell, it is NOT a head gasket problem. I will check hose connections next, more than likely the connection on top the engine, back by the firewall.

 

Turn the a/c or defrost (runs the a/c) on while you drive around, see if the gurgling gets worse and see if its dripping under the truck.

 

Or the hardline / top of the block behind the water pump, here -



Yea , these to, as said -



Intake gaskets usually get bad at the front jackets, - you may find this under them -

 

Ok, problem has gotten worse and just checked for CO's in coolant again. Yes it is confirmed, Co's in the coolant! Trying to decide what to do with this thing. Again this is a used motor with 100,000M. Why it would have this problem already is a mistery. WHAT WOULD CAUSE THIS, in other words, DOES ONE PROBLEM, LEAD TO THIS ONE? If the head/heads are cracked I'm not fixing this.($700 for two heads and the used motor already cost me $1300) If it is just a gasket problem, it's probably worth fixing. I can get the heads redone for $200, gasket kit for $150. What I don't know is; How much labor would be on this job? HOW MANY HOURS DOES A SHOP'S BOOK SAY THIS JOB IS SUPPOSED TO TAKE? Just trying to get an idea on $$ amount before I have someone (mechanic friend)tear into this.