Possible blown HG, need help to diagnose.
#17
The injector cups seal in two spots with green locktite, one on each side of the water jacket in the head. A crack in the cup in the area of the water jacket will put diesel in the coolant. But if the lower seal is not sealed right it will leak coolant and allow combustion gasses into the coolant system. There will be no raw diesel in the coolant system in this instance. He said all 8 cups were replaced, so a crack is unlikely but one might not be sealed well.
Might as well get the head fluxed if you end up pulling it out.
Keep us posted if you figure anything out.
#18
They are probably fine, I was just explaining to williamub that there doesn't have to be diesel in the coolant with a cup leaking.
I think your only option at this point for the leak is to pull the head and see if its the head gasket, it most likely is. That sucks man!
I think your only option at this point for the leak is to pull the head and see if its the head gasket, it most likely is. That sucks man!
#19
Just went and let the truck warm up and took it for a spin. I can honestly only hear the knock at idle and when i partially touch the throttle, then it just blends in with the rest of the noise. I can't generalize it to one area. With the stethoscope put to the exhause manifold, it was making all sorts of sounds, but it did it on both sides of the motor. It sounds like it's just the motor in general. I can't decide if its just a noise these motors make, or its abnormal.
#20
Is it like a steady tick,tick,tick? My truck's vacuum pump does that when it's a cold start at idle. As soon as it warms up, that noise seems to fade away (yes, I know I probably need to replace the vacuum pump). Could also be you have a small exhaust leak maybe? I've head those on the big truck diesels that I could swear was rod knock.
#21
Is it like a steady tick,tick,tick? My truck's vacuum pump does that when it's a cold start at idle. As soon as it warms up, that noise seems to fade away (yes, I know I probably need to replace the vacuum pump). Could also be you have a small exhaust leak maybe? I've head those on the big truck diesels that I could swear was rod knock.
#22
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spindler52
6.0L Power Stroke Diesel
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12-04-2011 10:38 PM