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coolant in air filter box

9K views 5 replies 5 participants last post by  klhansen  
#1 ·
2001 F-350 7.3
Driving down the highway today and noticed truck began running rough and then started running hot and smoking out of tailpipe so bad I could not see behind me. Lost all power and shut off. Found coolant in air filter box and turbo intake pipe. Plenty of oil on dip stick with no water. Filled coolant tank and restarted. Would not idle and continued to smoke badly. Has my turbo gone bad?
 
#3 ·
After refilling coolant I don't know if it will run hot again or not since iit is very hard to get it to start. The water is getting into the air filter box somehow.Smoke looks almost white. Engine just had injector cups and o-rings 1200 miles ago and sice then had a problem idling.
 
#4 ·
They might not have gotten an injector cup seated properly.

If you're getting coolant in your intake, it can only really be coming from the crank case vent connection between the intake and turbo. Coolant is getting in the oil somehow and ending up there.
 
#5 ·
If it is a cup his oil level would change. I just did cups on my 2000 and all is good so far
But I took my time and let the cups sit for 16 hours to cure be for
I add fluids and started it so. I wonder if a injector did not seat all the
Way down or a cup's are bad and pushing in to the engine some now.
 
#6 ·
I vote for blown head gasket. Although rare, it could happen.

Injector cups separate the coolant passages from the fuel gallery, so a cracked or badly seated cup usually results in fuel in the coolant, not oil, although that could happen with a concurrent injector o-ring leak between the HP oil gallery and fuel gallery. Pull the fuel filter cap and look for oil in the fuel system (It'll look black). The problem idling after injector o-ring repair indicates that may not have been done right.

Pull the radiator cap and smell the contents of the coolant tank. If it smells like your exhaust normally does, that indicates a leak from the combustion chamber to the coolant passages in the block or head or a head gasket leak. A blown head gasket will also make the coolant pressure go way above 16 psi and blow past the cap.