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Old Nov 14, 2020 | 11:27 PM
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Superduty ROCKS's Avatar
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Coolant in engine oil

I have a stock 2001 with 220000 on the clock.
Is it possible for the bottom of the injector cup to leak into the cylinder, causing it to fill with antifreeze? The top of the cups are not leaking when doing a pressurized test on the system, can the bottom be leaking and we just cant see it?
Or can it be a head gasket or cavitation of the cylinder wall?
 
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Old Nov 15, 2020 | 05:13 AM
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Originally Posted by Superduty ROCKS
Or can it be a head gasket or cavitation of the cylinder wall?
The most common are cavitation on the front cover at the water pump, or the oil cooler!
 
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Old Nov 15, 2020 | 07:58 AM
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If your cylinder filled with coolant it would hydrolock and either not turn over or blow something apart.
 
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Old Nov 15, 2020 | 08:24 AM
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That’s correct walleye.
Are there any other symptoms associated with this issue? Slight miss or white smoke out the exhaust?
 
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Old Nov 15, 2020 | 11:47 AM
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Probably not related but just in case I had all my coolant end up in my diesel fuel tank. Ended up being a cracked head. :0( . All better now but what a process to figure it out. Good Luck!
 
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Old Nov 15, 2020 | 12:54 PM
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Originally Posted by Walleye Hunter
If your cylinder filled with coolant it would hydrolock and either not turn over or blow something apart.
True, but the glow plugs and injectors are out, cylinder #2 filling with coolant, where is it coming from?
 
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Old Nov 15, 2020 | 01:00 PM
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Originally Posted by cjfarm11
That’s correct walleye.
Are there any other symptoms associated with this issue? Slight miss or white smoke out the exhaust?
Truck was just sitting in garage when this issue came up, was rebuilding turbo ot the time, when i noticed my coolant disappearing from the reservoir. Pulled glows and injectors, #2 fills up when pressurized, but cant tell where its leaking from
 
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Old Nov 15, 2020 | 01:02 PM
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Head gasket, cracked head, cracked block.... You are running out of options.

Hobo
 
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Old Nov 15, 2020 | 01:19 PM
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Originally Posted by hobohilton
Head gasket, cracked head, cracked block.... You are running out of options.

Hobo
True. Still hoping it can be injector cup, not leaking from the top of the cup, can it leak from the bottom and fill the cylinder up with cooant?
 
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