WTF Car exploded

[S13Sil-line]

Never had this problem before, dont know whats going on. I know its not a 240 issue but for those who cant drive thier daily driver know whats up.....Whats it mean when the radiator fluid turns to a milky color and has the texture of grits..kinda???? Oil mixure right... Ok so I noght have a blown head gasket or cracked head/block....mayby. Its a v-6. Please no ignorant post. I relize this is a 240 site only. The radiator over flow hose melted the overflow tank and sprayed **** everywhere. motor is not knocking what so ever, and I took the intake manifold off today and there is oil coating the inside???/ Help please, this sux.

[Nismo_Freak]

Blown Headgasket

[NISTECH]

what engine is in this car other then its a v6?. is it even a nissan? this is not just a 240 site its all nissans and infinitis

[S13Sil-line]

You'll laugh because I did too. Its an Isuzu Rodeo. But thats not nissan, I know. Just help from anywhere helps.

[NISTECH]

thats cool used to be an isuzu tech. 3.2L or 3.1L

[S13Sil-line]

95.5 3.2 V-6 Manual

[NISTECH]

I suspect the oil is only in the coolant passeges of the intake since you doid not mention your blowin a cloud of smoke out the tail pipe. If you dont have milky oil I suspect you have a pourous head allowing oil into the cooling system. if the oil is milky I'll go with the head gasket as nismo_freak said. but usually it was the 3.1l that had the head problem.

[PalmerWMD]

Scott;

As usual top notch insight, you rock!

Fred..

[NISTECH]

thanxs fred but i aint braggin I was a ickysuzu tech keep that hush hush...lol

[S13Sil-line]

I just drained the oil and it looks like normal used oil. If it is a pourous problem how can I fix this and what caused it???

[NISTECH]

if it is infact pourous it has always been existant it is just that the pours were smaller and had expanded over time allowing the oil to pass through. understand though these pours are very small and would be impossible to see with the naked eye. the only true way to test for this would be to send the heads to a machine shop and have them pressure checked to locate the source of it. even if you did find it the only real repair would be to replace the effected head. The reason your car over heated and blew out the resivor is because the cooling properties of your system were drastically reduced when the coolant became infected with oil. when you do the repair your gonna need to replace the t-stat and flush the entire cooling system. since your engine isnt the one more common to the condition i mentioned .seriously get the heads pressure checked to confirm it. good luck with it.

[S13Sil-line]

I bought a new t-stat and I was goiin to wait untill the problem was fixed before I flused it because Im afaid Ill get water where its not supposed to be. Is it possible I have a cracked head? And if there is oil in the coolant..wouldnt thier be water in the oil since the water is thinner???? Thanks a ton for your help.

[S13Sil-line]

Oh, also I started to notice a few weeks prior to this the heater would shoot out cold air even if the car has been running for 30 min or longer. I think the heater was running when this happend.

[S13Sil-line]

Any other help???

[NISTECH]

I bought a new t-stat and I was goiin to wait untill the problem was fixed before I flused it because Im afaid Ill get water where its not supposed to be. Is it possible I have a cracked head? And if there is oil in the coolant..wouldnt thier be water in the oil since the water is thinner???? Thanks a ton for your help.

I meant to do it once you reassembled the engine after repairs. If it was simply a cracked head it would be more likely to have a crossover of water to oil as well.although it is possible depending on how big the crack is. the reason you are not seeing coolant in the oil is because the coolant pressure isnt high enough to push the coolant through the pours. but since oil pressure is much higher then coolant pressure it is able to push it through the pours. your radiator cap pops off around 12psi which allows coolant to pass through to the over flow bottle. your oil pressure on the other hand can get pretty high once that oil gets up to operating temp it is much thinner and your pressure is in the neighborhood of 60psi on accel . I have seen a 97 maxima with out any drivability problems push 100psi on cold start up with a oil pressure gauge hooked to the sender port. this was as an example in tech school.

Oh, also I started to notice a few weeks prior to this the heater would shoot out cold air even if the car has been running for 30 min or longer. I think the heater was running when this happend.

that indicates a lack of coolant in the heater core(air pocket) this is probably due to the coolant was becoming contaminated and was slowly being lost through the over flow.