hydro locked 7.3 - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 07-25-2012, 06:29 AM Thread Starter
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hydro locked 7.3

2000 f350 stock 200,000 miles. after sitting a few days engine hydrolocks. have in the past turned engine over by hand and then start engine. truck runs great no issues. decided to remove glow plugs to find out what was hydro locking engine. found # 4 cylinder with coolant . also signs of coolant in oil. coolant bottle shows no signs of contamination of fuel or oil. my question is will a injector cup failure allow coolant into cylinder. does any one have ideas on what may causing this problem. any help will be great.thanks all
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post #2 of 3 Old 11-09-2012, 09:24 PM
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Maybe this help you

THE HEADS HAVE A WATER PASSAGE AROUND THE INJECTORS. THEY HAVE SLEEVES IN THEM AND HAD TO PUT NEW SLEEVES IN THEM. ALSO YOU CAN PRESSURE TEST THE COOLANT AT RADIATOR AND SEE IF YOU HAVE A BLOWN HEAD GASKET, UHM My instant thought is cavitation erosion on a cylinder or a cracked block/head. But it could and most likely is just a head gasket.
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post #3 of 3 Old 11-10-2012, 02:56 AM
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Try posting this in the 7.3 section.

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