Hi Scotty, purchased a 2011-Ford-F150-FX4-Coytote 5.0-120k miles very nice/clean truck. The truck has what I believe is the dreaded rod-knock due to work piston bearings. Knocks when hot or cold. Bearing replacement Looks like a big job considering the 4x4 is in way of the oil pan. Any advice?
Big fan for years now. You saved me a fortune! I live up the road in Elizabethtown KY, would be great to meet you!
Thanks!
Bob
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Id advise getting a new motor, or looking around for someone why can properly rebuild that one entirely. If the rod bearings are toast, the rest of the engine probably isn't far behind. Wouldnt be worth it to just do bearings.
I'm assuming the thing wasn't maintained all that well?
Hi, not sure of the past maintenance. However for an 11 year old truck it is in quite excellent condition overall. I would be surprised given the overall condition they did not change the oil but not sure. It does not burn oil, just has the knock.
My understanding is this is a Gen1 Coyote with these bearings being a known weakness. I have heard this particular bearing issue was supposedly fixed in Gen2 Coyotes. Thanks!
Get a reman motor from ATK, Jasper, Poertrain or somerbody else with a good warranty. There is no such thing as piston bearings. As @nta98 said, probably due to not changing the oil. Sometimes, you can jack up the frame of the truck, letting the suspension hang down low enough to remove the oil pan and have access to the rod bearings.
Hi, thanks for the comment. Perhaps I should have said 'bushings'? I have seen them listed as bushings or bearings. Regardless, these are the aluminum semi-sleeves attached to the bottom of the piston rod (shaft?) and clamp around the crankshaft with two bolts per cylinder.
Google: King Bearings 4.6L/5.4L/5.8L/Coyote 5.0L Coated Rod Bearing Set
https://www.teamjdm.com/king-bearings-4-6l-5-4l-5-8l-coyote-5-0l-coated-rod-bearing-set/
it's right there ... "rod bearing".
Sorry, I meant Powertrain Products and somebody.