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We covered so much on my Sport trac. Hope you are available.

Reply does not need to...
We covered so much on my Sport trac. Hope you are available. Reply does not need to be immediate. So, I replaced the #1 fuel injector. No more fuel in exhaust. P2196 returned even with new bank1 upstream sensor. Still lots of white smoke. Took it to a trusted mechanic who says his "engine guy" says it looks like it has "many more miles on it" than the 51K it shows. I bought it from a dealer with 11K on it. First question: is it possible for the dealer to change the mileage? In the 40K miles I've put on it, it has never gotten hot. "engine guy" says it has and that I need a new engine. How can that be determined without a leakdown test? Lastly, After I got it all back together I idled foe a while to see if the exhast would clear up. Then drove it gingerly about two miles to the shop. It never got hot, idled smoothly, performed upto 40mph with no noticeable loss of power, noise, or anything else. Just moderate amount of white but oily smelling exhaust. Does this sound like a bad engine? Many Thanks, Paul
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Answered in 1 hour by:
9/18/2017
6Bucs
6Bucs, Ford Senior Master
Category: Ford
Satisfied Customers: 1,029
Experience: Ford senior master tech, 18 years experience.
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Hello Paul. Thank you for requesting me.

It is physically possible to change the mileage on a vehicle, but most dealers and even shady used car lots would never bother messing with that. Besides being illegal, there's hardly a point. On your last question I ran your VIN through Ford's database which gives the complete warranty history and on the date and mileage of previous repairs coincides with the mileage you currently have now.

I would question the ambiguity of 'looks like it got hot'. Did they remove a valve cover and see discoloration of the head, or bluing of a camshaft, for example. I would also want a clear cut diagnosis beyond just 'needing an engine'

Head gasket failures especially on cylinders 2 and 5 aren't what I would call common, but I have seen them. This would result in coolant loss, white, sweet smelling exhaust vapor, and possibly the P2196. You're at pretty low mileage for that to happen, but it is possible. This can be verified by a chemical block test, along with cylinder compression and leakdown tests. On this engine, I perform all 3 before condemning an engine or head gasket. If the head gasket had failed, you would likely have a misfire code, or feel the engine run rough either at cold start, or when fully warmed up.

If you paid for a diagnosis, perhaps the shop can give a better explanation of what they suspect is going on, as it looks like right now we need more information.

I hope this helps.

James.

6Bucs
6Bucs, Ford Senior Master
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Experience: Ford senior master tech, 18 years experience.
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