Get a new engine or move on?
If it were me, I would get a second opinion on "you need a new engine". I recently helped a buddy with a 2018? (it was not a Ford) that he bought for $1700 that the owner said that the dealer told him "you need a new engine". It turned out to be a stuck open injector on cylinder #1 and my buddy made $10,000 profit on that one. Second and even third opinions can sometimes save the day.
It’s a completely shot 3rd cylinder.
I do love this truck. I’ve had a lot of fun replacing and upgrading a bunch of it.
I never thought about upgrading the engine as suggested earlier. What other engines would work in a 2004 F150? Would that also require a new transmission? I’m not exactly great at knowing mechanical details.
I do love this truck. I’ve had a lot of fun replacing and upgrading a bunch of it.
I never thought about upgrading the engine as suggested earlier. What other engines would work in a 2004 F150? Would that also require a new transmission? I’m not exactly great at knowing mechanical details.
Depending on what diag was done, agree with a second opinion suggestion.
if it’s really shot, I’d get a used engine as they are typically good for hundreds of thousands of miles.
if you can get an 07/08 4.6 you’ll pick up some added HP, but look into what all else you’ll need (assuming intake manifold and possible pcm or reflash of your pcm, but I’m not sure on specifics).
and/or watch for a smashed up truck or one with bad trans or something. Would probably be cheapest option if you have way to pull it cheaply.
Good luck and post back with diag info and how you proceed.
What exactly does a "shot 3rd cylinder" mean? Bent rod? Melted piston? Cylinder wall scoring? Who diagnosed it? What'd it do that made you take it in?
The 4.6L was known for reliability, 127,000 miles is LOW for one of those. My 5.4 I had gave me 170,000 relatively trouble free miles other than replacing the timing components. I would take it somewhere else for a second opinion before making any decision. I've heard several stories on here of mechanics immediately jumping to replace the engine without doing good diagnostics.
The 4.6L was known for reliability, 127,000 miles is LOW for one of those. My 5.4 I had gave me 170,000 relatively trouble free miles other than replacing the timing components. I would take it somewhere else for a second opinion before making any decision. I've heard several stories on here of mechanics immediately jumping to replace the engine without doing good diagnostics.
I'm not a fan of the 4.6. I had that engine in a 1998 and a 2003. It is grossly underpowered for a truck, but generally reliable. I have friends with that engine in trucks approaching 400,000 miles. I'd be looking for one in a scrapyard with around 100K on it. It should be good for at least another 100K. You were either extremely unlucky or the engine was neglected at some point to die at 127,000 miles.
I'd go that way for around $2000-$3000 total. Keep it a while and then decide if you want to keep it or trade it for something else. You'll get more for it running than not running. Enough more to cover the cost of a scrap yard engine install.
I'd go that way for around $2000-$3000 total. Keep it a while and then decide if you want to keep it or trade it for something else. You'll get more for it running than not running. Enough more to cover the cost of a scrap yard engine install.
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From: Somewhere on the south side of Heaven.
In all fairness to the 4.6, part of the reason they seemed underpowered was because of the 4 speed trannys they were mated to, in heavier steel body trucks. They did get the 6R80 toward the end but I have never met anyone that had one.
If the 4.6 was (somehow)mated to a 10R80 in an aluminum body truck it would be a completely different animal.
If the 4.6 was (somehow)mated to a 10R80 in an aluminum body truck it would be a completely different animal.








I'll replace it same same.
