2006 expedition HYDORLOCKING
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2006 expedition HYDORLOCKING
I have a 06 expedition. 5.4L V8. The car is mostly my wifes car and does not see hard miles. The milage on the car is only balrey 50,000. So we are driving down the road and the check engine light comes on, and the car starts running very rough. SO i took it to Ford and they found that the #7 injector went out filled the cylinder and from that hydrolocked the engine. To replace that motor from ford is is $5,400 before instulation, and Ford isnt going to cover it. I was just wondering if anyone else has had this problem with their 5.4L engine?? and if so why dosent ford fix thier problem insted of charging their customers tons of money to fix thier probelms?? Please let me know if anyone else has gone through this.
thank you
thank you
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Wow this is a new one. With the crappy sparkplug design I'm surprised that the plug didn't blow out before the rod. And man that injector mus have really failed to pour that much fuel into the cylinder. Usually hydrolocking is from a cracked headgasket since water can't compress, but gasoline can. (or, in the case of boats, you actually get water in the intake manifold)
It was my understanding that injectors fail closed, not open (in case the injector harness wire comes off or something similar).
If you have a new engine put in, I would make sure that the stealership checks the ECU to verify that it isn't holding an injector open.
Just out of curiosity, did you try pulling the spark plugs and cranking the engine over?
It was my understanding that injectors fail closed, not open (in case the injector harness wire comes off or something similar).
If you have a new engine put in, I would make sure that the stealership checks the ECU to verify that it isn't holding an injector open.
Just out of curiosity, did you try pulling the spark plugs and cranking the engine over?
Fleet Owner
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If this were true you would not have driven the vehicle to the dealer because the engine would not turn. Based on what you've told us, your dealer is not being straight with you.
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From: Pinellas Park, FL
agree with alloro on this one. Just that word hydrolock sends shivers down my spine (one Toyota - two motors in 93) Truck within manufacturer warranty (about 8 mos old, my present to myself out of the military) neither covered. Back to the point, motor would not crank, wheels would not turn when in gear. If you drove it in - it was not hydrolocked when you got there. Of course it would be hard to prove and the repair may end up being the same, but you may want to ask some more questions. Unfortunately the Expeditions only have a 3/36k warranty - at least my 06 did. Mine was from water in the intake, maybe gas in the cylinders will still let the motor run, but that defeats their own deifnition of the motor being hydro "locked".
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expediton hydrolocking
Well, i do know for sure that the when the injector failed it stayed open, it was spraying fuel across the shope when they were being tested. Why it kept running i dont know. I know that when this problem happend i never turned off the engine. As soon as ths propblem happend i was right down the road from the dealer and took it there. I am alreay in this car about 1,000 bucks and its not even close to being done. Just for the injector work and the dignostics they have been charging me. I love Ford but to be honest with you guys this will be the last 5.4 i ever own.
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Was the injector still in the engine when it was spraying across the shop, or had they removed it and put it in an injector cleaner / tester?
If it was still attached to the engine fuel rail, and the rail was still bolted in, it sounds like the injector actually ruptured or split open, or your fuel rail split open. That should be no more than a $100 fix since it's about 20 mins of labor and an $80 part.
I'm still just trying to figure out how the shop got it to spray
If they actually ran the engine with the injector or rail disconnected, I'd find somewhere new!
Either way, if the engine is still running (albeit rought) it isn't hyrdro locked, and the shop doesn't know their engine terms.
If it was still attached to the engine fuel rail, and the rail was still bolted in, it sounds like the injector actually ruptured or split open, or your fuel rail split open. That should be no more than a $100 fix since it's about 20 mins of labor and an $80 part.
I'm still just trying to figure out how the shop got it to spray
If they actually ran the engine with the injector or rail disconnected, I'd find somewhere new!Either way, if the engine is still running (albeit rought) it isn't hyrdro locked, and the shop doesn't know their engine terms.
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06 expedition hydorlockin
Well, the engine does run. its not to rough when it is idling but when you give it gas then it really knocks, I already fixed the injection but its still knocking. ALSO it has no power. AT ALL. and i think when the injector went out it melted the "CAT" 
So i dont know, im at a loss of word with this car. but i do think i have a bent push rod?? To be honest i just have no idea anymore. You guys are the only ones to give me straight answers. I dont even know what to do to start on this car, and i dont wana pay some shop tons of money to fix it if they are just trying to screw me.
So i dont know, im at a loss of word with this car. but i do think i have a bent push rod?? To be honest i just have no idea anymore. You guys are the only ones to give me straight answers. I dont even know what to do to start on this car, and i dont wana pay some shop tons of money to fix it if they are just trying to screw me.
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hmm...
the 5.4 uses lash adjusters instead of pushrods, so you can take that idea out. I suppose a lash adjuster could be shot, but it would more likely be a bent valve. Either way, they can be repaired with the engine in the vehicle. Not really, easy, but do-able.
Does it "lope" at idle? I kinda wonder if maybe it's out of timing - like the timing chain skipped a tooth?
You could be on the right track though with one of the cats being plugged up. Might call a couple different exhaust shops and see if they will do a free diagnosis and see what you get.
I'll do some more thinking.
the 5.4 uses lash adjusters instead of pushrods, so you can take that idea out. I suppose a lash adjuster could be shot, but it would more likely be a bent valve. Either way, they can be repaired with the engine in the vehicle. Not really, easy, but do-able.
Does it "lope" at idle? I kinda wonder if maybe it's out of timing - like the timing chain skipped a tooth?
You could be on the right track though with one of the cats being plugged up. Might call a couple different exhaust shops and see if they will do a free diagnosis and see what you get.
I'll do some more thinking.
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06 expedition hydorlockin
Whats the differance in a lash adjuster and a push rod??? those modular engiens are funky to me, If this was like a 1970 ford pick up id be ok, but when i look under the hood of this car i dont know if i should call a mechenic or geek squad
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From: Central NYS
Without the need for the weight of pushrods and lifters giggleing back and forth saves significant weight in the valve train allows these engines to be more stable at the higher revs. Granted, they have many feet of cam chains, but the chain does not have to speed up, then stop and change direction, stop change direction, etc., like the lifters and pushrods have to do. The reduced valvetrain weight prolly allows for lighter valve spring pressures, also, which will help lower parasitic drag (which saves fuel).
If your engine truly hydrolocked when they were working on it, the connecting rod may be bent. Is the knock coming from the lower portion of the engine or up near the top of the engine?
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If the engine did indeed hydrolock at some point, it's a connecting rod that would bend not a pushrod. Do a compression test on the #7 and the #5 cylinders. Testing #5 is just to give you an idea of what the compression should be. If #7 is within 10% of the reading on #5, then it's likely not a bent connecting rod.
Any chance a piece of the injector broke off and is bouncing around inside the cylinder?
Any chance a piece of the injector broke off and is bouncing around inside the cylinder?
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