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Broken timing chains - 2011 Ecoboosts

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Old 01-20-2014, 02:37 PM   #131
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You could try renting the workshop manuals here:

https://www.motorcraftservice.com/vd...ageid=cat_main
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Old 01-20-2014, 09:46 PM   #132
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You could try renting the workshop manuals here:

https://www.motorcraftservice.com/vd...ageid=cat_main
Don't waste your money on the website. It's very difficult to print the procedure and even then the photos are blocked. I ended up asking for my money back. That said, the dealer did print if for me today! I doubt the file limits will allow me to post it to the website.
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Old 01-20-2014, 10:04 PM   #133
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Here are the special tools that were on the work bench: 307-675, 307-672/2, 307-677 (believe this one is to remove the cam phaser bolt), 307-676/5, 307-676/3, 307-580, 303-1248 (cam holder), 303-1251, 303-1530, amd 303-11251.

Here is my chain slop:
The tensioners were all tight and I couldn't move them with my fingers. The chain was loose enough around the idler pulley that I could see it wanting to skip. Dealer still insistent that it was the cam phasers...
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Old 01-20-2014, 11:03 PM   #134
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Here are the special tools that were on the work bench: 307-675, 307-672/2, 307-677 (believe this one is to remove the cam phaser bolt), 307-676/5, 307-676/3, 307-580, 303-1248 (cam holder), 303-1251, 303-1530, amd 303-11251.

Here is my chain slop: http://youtu.be/3JxYrDN00KI The tensioners were all tight and I couldn't move them with my fingers. The chain was loose enough around the idler pulley that I could see it wanting to skip. Dealer still insistent that it was the cam phasers...
Well, thats not good. How much slack does a brand new EB have? How much slack is ok? Is the tensioner out of travel?
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Old 01-21-2014, 08:33 AM   #135
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I'll know more today, after they contact engineering. Best I can tell, all of the slack was over the idler pulley. It was tight across the two lower guides. Couldn't even push it around.

Thinking about how the chain will react when started; when the crank starts pulling the chain, the drivers side will go tight and the passenger will go tight next. This means the chain will pile up over the main tensioner. Makes sense why the tensioner is on the passenger side. Once the oil pressure builds, the tensioner takes up the slack and all is quiet. That's my rattle on start up. Why doesn't the chain stay tight when the engine is shut down? I also could feel the engine go into safe mode when I decelerated for a turn. Might have to do with how the chain is bunching up again. Why is that the computer is seeing a timing mismatch on the passenger side cam phaser. Is the chain stretched so that the last cam phaser is timed a bit late? Boy, now that would make a ton of sense. The other possibility is that the guides are getting cut down. I wasn't able to inspect them with the chain still on. The chain is very fine and there are a lot of links. Quieter, but also more wear points.
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Old 01-21-2014, 01:38 PM   #136
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How many teeth are showing on the main tensioner??? How could the phaser cause the chain to have slack? I can see the phasers pulling the slack to the idler sprocket but the chain must be stretched or the main tensioner must not be holding tension on the chain while the engine is not running.
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Old 01-22-2014, 02:27 PM   #137
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Well, per the dealer, Ford says the chain slack is acceptable. They should have it back together late today...
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Old 01-22-2014, 02:36 PM   #138
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Well, per the dealer, Ford says the chain slack is acceptable. They should have it back together late today...
really. that looks like it should be tighter to me.
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Old 01-22-2014, 02:39 PM   #139
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Well, per the dealer, Ford says the chain slack is acceptable. They should have it back together late today...
So how does the tensioner work? Is it spring or oil pressure? The chain doesn't seem to have enough tension on it in the video. If it uses oil pressure, this seems like a recipe for jumping teeth.
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Old 01-22-2014, 04:11 PM   #140
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You kidding me..........did they find anything wrong??? That chain looks way loose.
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