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engine knocking on 1997 Ford Expedition

out of now where my engine started knocking really loud,i checked my oil and it was very low,as well as my gas,not sure if i blew a rod,or it was a spark knock due to low fuel or my knock sensor went out and the computer is throwing the timing off,i put oil but the knocking is still there,louder when i accelerate..havnt refuled yet.. please help!!!

Asked by for the 1997 Ford Expedition
have a diag done by a mech and don't drive until then you can cause more damage
2 more answers
Don't waste any money on fuel. Best have a professional technician listen to your engine to determine how serious of problem you might have.
Most probability crank shaft damage due to lack of lubrication, May be a good time to decide to fix or replace Engine or vehicle . It will be a significant expense. Before you make that decision , have a shop check for loose bolts to the flywheel. Some times it sounds like a bad rod .
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