05 5.4 seems to have locked up ??
#1
08-21-2017, 08:58 PM
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05 5.4 seems to have locked up ??
Started truck, was running rough and smoking bad. Figured o2 sensor went out again. Turned off the engine and started it again. Heard a thunk before the motor started. Ran codes showed 02 sensor bad. Replaced with new. Now the starter just spins not the crank. Hydrolocked maybe ? Any suggestions
#3
08-21-2017, 11:27 PM
If the starter spins but the engine doesn't, that tells me something is wrong with the starter or the flex plate.
To check for a hydrolock, use a breaker bar and socket on the crank pulley bolt, will the engine turn? If not, pull the spark plugs and try again. Note that you may break the spark plugs trying to get them out.
To check for a hydrolock, use a breaker bar and socket on the crank pulley bolt, will the engine turn? If not, pull the spark plugs and try again. Note that you may break the spark plugs trying to get them out.