Rear Main Seal Leaking
I have a 2000 ford expy 4x4 5.4l, engine has been running real well at 130k miles. I noticed a leak the other day and it looks like the rear main seal. I have also noticed about a 50 mile drop per tank in mileage. How difficult is this to replace the seal or what would a dealer charge to do so? Also could this be a precursor to something worse like the engine going out?
Thanks for the help. Robert |
its a peice of cake once you get the tranny out.
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I am mechanically challenged at times with major projects. So I am very leary of taking this on as it is my daily driver.
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you can have it done for about $500 fo the labor transmission oil and filter (might as well...) and the seal another $150. there is a possibility this does mean the rear main bearing is worn but most likely its just the seal especially at only 130k. I would have it done and take the risk.
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If it is the rear main bearing what is that and how is that replaced?
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Originally Posted by Quadkeys
(Post 3602260)
If it is the rear main bearing what is that and how is that replaced?
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Just where is the leak at? If it is above the starter only on that side, you are probably looking at the head gasket leaking, not a rear main. I haven't replaced a rear main in a 5.4 ever. Although it is a possibility. Just really take a look at the back of the pass cylinder head. The oil pressure feed to the head is located back there and in 99, Ford changed the gasket and it had a problem, so they switched back. I know it is a 2000, but I bet the engine was made in 99. The rear main bearing is internal to the engine and if it goes bad, you will have excessive lateral movement on the crankshaft.
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I have checked the valve covers and those are not leaking. It is coming from the underside near the tranny pan. Thats why I thought it was the rear main seal. My neighbor is a mechanic and he confirmed the leak. Ford wants $1007 to do, OMFG!! They should not be hurting for money with those prices.
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you need to look at the rear of the pass side head above the starter
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should I be able to feel it or do I need a mirror to look at it?
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You can see it through the wheelwell, or with a flashlight under the truck. Follow the trans dipstick up and just above the starter is where the gaskets leak. If that's what it is, it would be a $1200 or more repair at a dealer. It calls for about 10 or so hours to replace. Along with a lot of gaskets and head bolts.
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Thanks I will look at that once I get home and the engine cools a bit. You guys are great and plethera of knowledge.
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