[Chevyboy_0]

Hey guys. We've got an 87 250 with the 6.9L. And it's got water in the oil. I have a strong feeling that the head gasket(s) are toasted. When I checked out the motor to see if there's any visible signs I came up with nothing it doesn't look like there's any visible oil/coolant leaks. Is there anythng else besides the head gasket that could possibly let water in the oil?

 

[Spencnaz]

There is an oil cooler on the driver's side of the block. The o-rings that are inside that oil cooler can give way after years of service.

Your local Ford dealership should have the o-ring kit. It's a bit of a job to get the oil cooler out. Be prepared.

 

[LMJD]

Before you tear into anything as per internet diagnosis, do some more easy trouble-shooting before you possibly waste time and effort on the oil cooler. The first logical step would be to pull all your glow plugs, get a cooling system tester, pump it up equal to your rad. cap pressure and let the pickup sit pressurized for a period of time. Then crank the engine, if you get ANY coolant out the glowplug holes, that will definitely tell you which end to tear into---blown headgasket, cracked head or heads, etc. If not, then the search is on.

Plus you better hurry, you might need to get that baby fired up quick if CDC is forced to turn loose about 50,000 inmates like the news was saying today! J/K

 

[Chevyboy_0]

What you mean release 50000 inmates....?

Also how exactly would I hook up the cooling system tester? Just like I would normally? I askthis because I have never used a coolant system tester before... So any hints tips or tricks are greatly appreciated

 

[cdnsarguy]

It just attaches to the rad neck just like a rad cap and you pump it up. Coolant in the oil has several places to enter..... water pump bolts or front engine cover behind the water pump. Head gaskets as stated, valley pan sealing surface to head... oil cooler itself as well as the orings.

Is the oil green slime yet.......

 

[Chevyboy_0]

the oil isn't green slime, it's more of a grayish color...

 

[Chevyboy_0]

So today I noticed a nice lil pool of liquid surrounding the GP on cylinder 6.... I have a bad feeling about this....

 

[WhiteGardens]

Sound like you've got a leaky injector return line making that pool of liquid.

If it's water, than that sucks.

 

[Chevyboy_0]

I'm pretty sure it's water cause I dipped my finger in it to see what color it was and what it smelled like and it was clear and had no smell... What exactly would cause this?